Periodic properties IIT JAM Notes | EduRev

IIT JAM: Periodic properties IIT JAM Notes | EduRev

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Assignment Inorganic Chemistry         CSIR-NET (June)2015
PERIODIC PROPERTIES
1. Higher values of ionization energies of the 5d transition elements are consistent with the
(a) relatively smaller penetration (b) relatively smaller size of their atoms
(c) relatively smaller effective nuclear charge (d) All the above the correct
2. IE of an element does not depend on
(a) its nuclear charge (b) penetration effect (c) the shielding effect (d) electron neutrality
3. Which represents alkali metals based on (IE)
1
 and (IE)
2
 values?
(IE)
1
(IE)
2
(IE)
1
(IE)
2
(a) X 100 110 (b) Y 95 120
(c) Z 195 500 (d) M 200 250
4. For Cu, effective nuclear charge felt by a 4s-electron is
(a) 1.0 (b) 1.65 (c) 2.2 (d) 2.95
5. Element unq has atomic number
(a) 102 (b) 103 (c) 104 (d) 112
6. In which case effective nuclear charge is minimum?
(a) Be (b) Be
2+
(c) Be
3+
(d) In all cases
7. Most stable cation of element 113 will be
(a) M
+
(b) M
2+
(c) M
3+
(d) M
5+
8. Ionic radii are
(a) Inversely proportional to effective nuclear charge
(b) Directly proportional to effective nuclear charge
(c) Inversely proportional to square of effective nuclear charge
(d) Directly proportional to square of effective nuclear charge.
9. Which of the following order is wrong?
(a) Li
2+
 < Na
+
 < K
+
 < Ca
+
 – Ionic radius (b) NH
3
 < PH
3
 < AsH
3
 – Acidic
(c) Al
2
O
3
 < MgO < Na
2
O < K
2
O – basic (d) Li < Be < B < C – (IE)
1
10. The heat of hydration of Ca
2+
, Sr
2+
 and Ba
2+
 in the decreasing order is
(a) Sr
2+
 > Ba
2+
 > Ca
2+
(b) Ba
2 
> Sr
2+
 > Ca
2+
(c) Ca
2+
 > Ba
2+
 > Sr
2+
(d) Ca
2+
 > Sr
2+
 > Ba
2+
11. The first ionization potential of Al is smaller than that of Mg because
(a) the atomic size of Al < Mg (b) the atomic size of Al > Mg
(c) the atomic number of Al > Mg (d) Al has one unpaired electron in p-orbital
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2637, Hudson Lane, Behind Khalsa College, Near G .T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi - 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www .asfinstitute.com
Assignment Inorganic Chemistry         CSIR-NET (June)2015
PERIODIC PROPERTIES
1. Higher values of ionization energies of the 5d transition elements are consistent with the
(a) relatively smaller penetration (b) relatively smaller size of their atoms
(c) relatively smaller effective nuclear charge (d) All the above the correct
2. IE of an element does not depend on
(a) its nuclear charge (b) penetration effect (c) the shielding effect (d) electron neutrality
3. Which represents alkali metals based on (IE)
1
 and (IE)
2
 values?
(IE)
1
(IE)
2
(IE)
1
(IE)
2
(a) X 100 110 (b) Y 95 120
(c) Z 195 500 (d) M 200 250
4. For Cu, effective nuclear charge felt by a 4s-electron is
(a) 1.0 (b) 1.65 (c) 2.2 (d) 2.95
5. Element unq has atomic number
(a) 102 (b) 103 (c) 104 (d) 112
6. In which case effective nuclear charge is minimum?
(a) Be (b) Be
2+
(c) Be
3+
(d) In all cases
7. Most stable cation of element 113 will be
(a) M
+
(b) M
2+
(c) M
3+
(d) M
5+
8. Ionic radii are
(a) Inversely proportional to effective nuclear charge
(b) Directly proportional to effective nuclear charge
(c) Inversely proportional to square of effective nuclear charge
(d) Directly proportional to square of effective nuclear charge.
9. Which of the following order is wrong?
(a) Li
2+
 < Na
+
 < K
+
 < Ca
+
 – Ionic radius (b) NH
3
 < PH
3
 < AsH
3
 – Acidic
(c) Al
2
O
3
 < MgO < Na
2
O < K
2
O – basic (d) Li < Be < B < C – (IE)
1
10. The heat of hydration of Ca
2+
, Sr
2+
 and Ba
2+
 in the decreasing order is
(a) Sr
2+
 > Ba
2+
 > Ca
2+
(b) Ba
2 
> Sr
2+
 > Ca
2+
(c) Ca
2+
 > Ba
2+
 > Sr
2+
(d) Ca
2+
 > Sr
2+
 > Ba
2+
11. The first ionization potential of Al is smaller than that of Mg because
(a) the atomic size of Al < Mg (b) the atomic size of Al > Mg
(c) the atomic number of Al > Mg (d) Al has one unpaired electron in p-orbital
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12. The metal which gives no amphoteric oxide is
(a) AI (b) Cu (c) Zn (d) Sn
13. Stability order of group III A (boron family) element is
(a) Ga
3+
 > Ga
+
(b) Ga
+
 < In
+
 < Tl
+
(c) Both a and b (d) None of these
14. EN of the element (A) is E
1
 and IP is E
2
. Hence, EA will be
(a) 2E
1
 – E
2
(b) E
1
 – 2E
2
(c) E
1
 – E
2
(d) 
1 2
E E
2
?
15. AB is predominantly ionic as A
+
 B
–
 if
(a) (IP)
A
 < (IP)
B
(b) (IP)
B
 < (IP)
A
(c) (EN)
A
 < (EN)
B
(d) (EA)
A
 < (EA)
B
16. Which is incorrect statement?
(a) Ga
+
 salts are better reducing agents (b) Tl
3+
 salts are better oxidising agents
(c) Pb
4+
 salts are better oxidising agents(d) As
5+
 salts are better oxidising agents
17. Which pair is different from the others?
(a) Li – Mg (b) Na – K (c) B – Al (d) Ca – Mg
18. Which of the following ions has the smallest radius?
(a) Ni
2+
(b) Ti
2+
(c) Pt
2+
(d) Zr
2+
19. Pick out the isoelectronic structure from the following:
I. 
+
CH
3
II. H
3
O
+
III. NH
3
IV . 
?
3
CH
(a) I and II (b) III and IV (c) I and III (d) II, III and IV
20. The size of the following species increases in the order:
(a) Mg
2+
 < Na
+
 < F
–
 < Ar (b) F
–
 < Ar < Na
+
 < Mg
2+
(c) Ar < Mg
2+
 < F
–
 < Na
+
(d) Na
+
 < Ar < F
–
 < Mg
2+
21. In the following which configuration of element has maximum electronegativity.
(a) 1s
2
, 2s
2
 2p
5
(b) 1s
2
, 2s
2
 2p
6
(c) 1s
2
, 2s
2
 2p
4
(d) 1s
2
, 2s
2
 2p
6
, 3s
2 
3p
3
22. Decreasing ionization potential for K, Ca & Ba is
(a) Ba> K > Ca (b) Ca > Ba > K (c) K > Ba > Ca (d) K > Ca > Ba
23. Which of the following represents the correct order of electron affinities
(a) Cl > Br > I > F (b) Cl > F < Br < I (c) F > Cl > Br > I (d) Cl > F >Br>I
24. Which has maximum polarizing power in cation
(a) Li
+
(b) Mg
2+
(c) Al
3+
(d) O
2-
25. Ionization energy of the element X(g) is I and the electron affinity of X
+
(g) is E then
(a) I = E (b) I = – E (c) I = 
E
2
(d) I = – 
E
2
26. Consider the following statements
1. Cs
+
 is more highly hydrated than the other alkali metal ions.
2. Among the alkali metals Li, Na, K and Rb, lithium has the highest melting point.
3. Among the alkali metals only lithium forms a stable nitride by direct combination of these state-
ments.
(a) 1 and 2 are correct (b) 2 and 3 are correct (c) 1 and 3 are correct (d) 1, 2 and 3 are correct
Page 3


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2637, Hudson Lane, Behind Khalsa College, Near G .T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi - 110009
Mob. 09555785548, 08860929430, e-mail: info@asfinstitute.com, www .asfinstitute.com
Assignment Inorganic Chemistry         CSIR-NET (June)2015
PERIODIC PROPERTIES
1. Higher values of ionization energies of the 5d transition elements are consistent with the
(a) relatively smaller penetration (b) relatively smaller size of their atoms
(c) relatively smaller effective nuclear charge (d) All the above the correct
2. IE of an element does not depend on
(a) its nuclear charge (b) penetration effect (c) the shielding effect (d) electron neutrality
3. Which represents alkali metals based on (IE)
1
 and (IE)
2
 values?
(IE)
1
(IE)
2
(IE)
1
(IE)
2
(a) X 100 110 (b) Y 95 120
(c) Z 195 500 (d) M 200 250
4. For Cu, effective nuclear charge felt by a 4s-electron is
(a) 1.0 (b) 1.65 (c) 2.2 (d) 2.95
5. Element unq has atomic number
(a) 102 (b) 103 (c) 104 (d) 112
6. In which case effective nuclear charge is minimum?
(a) Be (b) Be
2+
(c) Be
3+
(d) In all cases
7. Most stable cation of element 113 will be
(a) M
+
(b) M
2+
(c) M
3+
(d) M
5+
8. Ionic radii are
(a) Inversely proportional to effective nuclear charge
(b) Directly proportional to effective nuclear charge
(c) Inversely proportional to square of effective nuclear charge
(d) Directly proportional to square of effective nuclear charge.
9. Which of the following order is wrong?
(a) Li
2+
 < Na
+
 < K
+
 < Ca
+
 – Ionic radius (b) NH
3
 < PH
3
 < AsH
3
 – Acidic
(c) Al
2
O
3
 < MgO < Na
2
O < K
2
O – basic (d) Li < Be < B < C – (IE)
1
10. The heat of hydration of Ca
2+
, Sr
2+
 and Ba
2+
 in the decreasing order is
(a) Sr
2+
 > Ba
2+
 > Ca
2+
(b) Ba
2 
> Sr
2+
 > Ca
2+
(c) Ca
2+
 > Ba
2+
 > Sr
2+
(d) Ca
2+
 > Sr
2+
 > Ba
2+
11. The first ionization potential of Al is smaller than that of Mg because
(a) the atomic size of Al < Mg (b) the atomic size of Al > Mg
(c) the atomic number of Al > Mg (d) Al has one unpaired electron in p-orbital
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12. The metal which gives no amphoteric oxide is
(a) AI (b) Cu (c) Zn (d) Sn
13. Stability order of group III A (boron family) element is
(a) Ga
3+
 > Ga
+
(b) Ga
+
 < In
+
 < Tl
+
(c) Both a and b (d) None of these
14. EN of the element (A) is E
1
 and IP is E
2
. Hence, EA will be
(a) 2E
1
 – E
2
(b) E
1
 – 2E
2
(c) E
1
 – E
2
(d) 
1 2
E E
2
?
15. AB is predominantly ionic as A
+
 B
–
 if
(a) (IP)
A
 < (IP)
B
(b) (IP)
B
 < (IP)
A
(c) (EN)
A
 < (EN)
B
(d) (EA)
A
 < (EA)
B
16. Which is incorrect statement?
(a) Ga
+
 salts are better reducing agents (b) Tl
3+
 salts are better oxidising agents
(c) Pb
4+
 salts are better oxidising agents(d) As
5+
 salts are better oxidising agents
17. Which pair is different from the others?
(a) Li – Mg (b) Na – K (c) B – Al (d) Ca – Mg
18. Which of the following ions has the smallest radius?
(a) Ni
2+
(b) Ti
2+
(c) Pt
2+
(d) Zr
2+
19. Pick out the isoelectronic structure from the following:
I. 
+
CH
3
II. H
3
O
+
III. NH
3
IV . 
?
3
CH
(a) I and II (b) III and IV (c) I and III (d) II, III and IV
20. The size of the following species increases in the order:
(a) Mg
2+
 < Na
+
 < F
–
 < Ar (b) F
–
 < Ar < Na
+
 < Mg
2+
(c) Ar < Mg
2+
 < F
–
 < Na
+
(d) Na
+
 < Ar < F
–
 < Mg
2+
21. In the following which configuration of element has maximum electronegativity.
(a) 1s
2
, 2s
2
 2p
5
(b) 1s
2
, 2s
2
 2p
6
(c) 1s
2
, 2s
2
 2p
4
(d) 1s
2
, 2s
2
 2p
6
, 3s
2 
3p
3
22. Decreasing ionization potential for K, Ca & Ba is
(a) Ba> K > Ca (b) Ca > Ba > K (c) K > Ba > Ca (d) K > Ca > Ba
23. Which of the following represents the correct order of electron affinities
(a) Cl > Br > I > F (b) Cl > F < Br < I (c) F > Cl > Br > I (d) Cl > F >Br>I
24. Which has maximum polarizing power in cation
(a) Li
+
(b) Mg
2+
(c) Al
3+
(d) O
2-
25. Ionization energy of the element X(g) is I and the electron affinity of X
+
(g) is E then
(a) I = E (b) I = – E (c) I = 
E
2
(d) I = – 
E
2
26. Consider the following statements
1. Cs
+
 is more highly hydrated than the other alkali metal ions.
2. Among the alkali metals Li, Na, K and Rb, lithium has the highest melting point.
3. Among the alkali metals only lithium forms a stable nitride by direct combination of these state-
ments.
(a) 1 and 2 are correct (b) 2 and 3 are correct (c) 1 and 3 are correct (d) 1, 2 and 3 are correct
3
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27. Following are the value of the electron-affinities of (in kJ mol
–1
) the formation of O
–
 and O
2–
 from O
(a) 142, 702 (b) –142, –702 (c) –142, 702 (d) –142, –142
28. The correct order of increasing ionic character is
(a) BeCl
2
 < MgCl
2
 < CaCl
2
 < BaCl
2
(b) BaCl
2
 < CaCl
2
 < MgCl
2
 < BeCl
2
(c) MgCl
2
 < BeCl
2
 < BaCl
2
 < CaCl
2
(d) BaCl
2
 < CaCl
2
 < BeCl
2
 < MgCl
2
29. Which is maximum hydrated?
(a) SiCl
4
(b) AlCl
3
(c) MgCl
2
(d) NaCl
30. Which has maximum ionization potential?
(a) N (b) O (c) Na (d) O
+
31. For Be Z
eff
 = 1.95, for B
x+
, Z
eff
 = 2.30, hence ion is
(a) Be (b) Be
+
(c) Be
2+
(d) Be
3+
32. Stability of ions of Ge, Sn and Pb will be in order
(a) Sn
2+
 < Sn
4+
(b) Pb
4+
 < Pb
2+
(c) Pb
4+
 < Sn
4+
 < Ge
4+
(d) Ge
2+
 < Sn
2+
 < Pb
2+
33. Which is/are correct order of ionic mobility?
(a) Li
+
 < Na
+
 < K
+
(b) Al
3+
 < Mg
2+
 < Na
+
(c) Na
+
 < Mg
2+ 
< Al
3+
(d) K
+
 < Na
+
 < Li
+
Directions (Q. Nos. 34 to 37)
This (IE)
1
 and the (IE)
2
 in kJ mol
–1
 of a few elements are shown below:
Element (IE)
1
(IE)
2
A 2372 5251
B 520 7300
C 900 1760
D 1680 3380
Based on the above information, answer the following questions
34. Which of the above elements is likely to be a reactive metal?
(a) A (b) B (c) C (d) D
35. Which of the above elements is likely to be a reactive non-metal?
(a) A (b) B (c) C (d) D
36. Which represents a noble gas?
(a) A (b) B (c) C (d) D
37. Which of the above elements forms a stable binary halide of the formula MX
2
?
(a) A (b) B (c) C (d) D
38. Which of the following does not reflect the periodicity of element
(a)  Bonding behaviour (b) Electronegativity
(c) Ionisation potential (d) Neutron/ Proton ratio
39. The electron affinity of the members of oxygen of the periodic table, follows the sequence
(a) O > S > Se (b) S > O < Se (c) O < S > Se (d) Se > O > S
40. The process of requiring absorption of energy is
(a) F ? F
–
(b) Cl ? Cl
–
(c) O
–
 ? O
2–
(d) H ? H
–
Page 4


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2637, Hudson Lane, Behind Khalsa College, Near G .T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi - 110009
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Assignment Inorganic Chemistry         CSIR-NET (June)2015
PERIODIC PROPERTIES
1. Higher values of ionization energies of the 5d transition elements are consistent with the
(a) relatively smaller penetration (b) relatively smaller size of their atoms
(c) relatively smaller effective nuclear charge (d) All the above the correct
2. IE of an element does not depend on
(a) its nuclear charge (b) penetration effect (c) the shielding effect (d) electron neutrality
3. Which represents alkali metals based on (IE)
1
 and (IE)
2
 values?
(IE)
1
(IE)
2
(IE)
1
(IE)
2
(a) X 100 110 (b) Y 95 120
(c) Z 195 500 (d) M 200 250
4. For Cu, effective nuclear charge felt by a 4s-electron is
(a) 1.0 (b) 1.65 (c) 2.2 (d) 2.95
5. Element unq has atomic number
(a) 102 (b) 103 (c) 104 (d) 112
6. In which case effective nuclear charge is minimum?
(a) Be (b) Be
2+
(c) Be
3+
(d) In all cases
7. Most stable cation of element 113 will be
(a) M
+
(b) M
2+
(c) M
3+
(d) M
5+
8. Ionic radii are
(a) Inversely proportional to effective nuclear charge
(b) Directly proportional to effective nuclear charge
(c) Inversely proportional to square of effective nuclear charge
(d) Directly proportional to square of effective nuclear charge.
9. Which of the following order is wrong?
(a) Li
2+
 < Na
+
 < K
+
 < Ca
+
 – Ionic radius (b) NH
3
 < PH
3
 < AsH
3
 – Acidic
(c) Al
2
O
3
 < MgO < Na
2
O < K
2
O – basic (d) Li < Be < B < C – (IE)
1
10. The heat of hydration of Ca
2+
, Sr
2+
 and Ba
2+
 in the decreasing order is
(a) Sr
2+
 > Ba
2+
 > Ca
2+
(b) Ba
2 
> Sr
2+
 > Ca
2+
(c) Ca
2+
 > Ba
2+
 > Sr
2+
(d) Ca
2+
 > Sr
2+
 > Ba
2+
11. The first ionization potential of Al is smaller than that of Mg because
(a) the atomic size of Al < Mg (b) the atomic size of Al > Mg
(c) the atomic number of Al > Mg (d) Al has one unpaired electron in p-orbital
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12. The metal which gives no amphoteric oxide is
(a) AI (b) Cu (c) Zn (d) Sn
13. Stability order of group III A (boron family) element is
(a) Ga
3+
 > Ga
+
(b) Ga
+
 < In
+
 < Tl
+
(c) Both a and b (d) None of these
14. EN of the element (A) is E
1
 and IP is E
2
. Hence, EA will be
(a) 2E
1
 – E
2
(b) E
1
 – 2E
2
(c) E
1
 – E
2
(d) 
1 2
E E
2
?
15. AB is predominantly ionic as A
+
 B
–
 if
(a) (IP)
A
 < (IP)
B
(b) (IP)
B
 < (IP)
A
(c) (EN)
A
 < (EN)
B
(d) (EA)
A
 < (EA)
B
16. Which is incorrect statement?
(a) Ga
+
 salts are better reducing agents (b) Tl
3+
 salts are better oxidising agents
(c) Pb
4+
 salts are better oxidising agents(d) As
5+
 salts are better oxidising agents
17. Which pair is different from the others?
(a) Li – Mg (b) Na – K (c) B – Al (d) Ca – Mg
18. Which of the following ions has the smallest radius?
(a) Ni
2+
(b) Ti
2+
(c) Pt
2+
(d) Zr
2+
19. Pick out the isoelectronic structure from the following:
I. 
+
CH
3
II. H
3
O
+
III. NH
3
IV . 
?
3
CH
(a) I and II (b) III and IV (c) I and III (d) II, III and IV
20. The size of the following species increases in the order:
(a) Mg
2+
 < Na
+
 < F
–
 < Ar (b) F
–
 < Ar < Na
+
 < Mg
2+
(c) Ar < Mg
2+
 < F
–
 < Na
+
(d) Na
+
 < Ar < F
–
 < Mg
2+
21. In the following which configuration of element has maximum electronegativity.
(a) 1s
2
, 2s
2
 2p
5
(b) 1s
2
, 2s
2
 2p
6
(c) 1s
2
, 2s
2
 2p
4
(d) 1s
2
, 2s
2
 2p
6
, 3s
2 
3p
3
22. Decreasing ionization potential for K, Ca & Ba is
(a) Ba> K > Ca (b) Ca > Ba > K (c) K > Ba > Ca (d) K > Ca > Ba
23. Which of the following represents the correct order of electron affinities
(a) Cl > Br > I > F (b) Cl > F < Br < I (c) F > Cl > Br > I (d) Cl > F >Br>I
24. Which has maximum polarizing power in cation
(a) Li
+
(b) Mg
2+
(c) Al
3+
(d) O
2-
25. Ionization energy of the element X(g) is I and the electron affinity of X
+
(g) is E then
(a) I = E (b) I = – E (c) I = 
E
2
(d) I = – 
E
2
26. Consider the following statements
1. Cs
+
 is more highly hydrated than the other alkali metal ions.
2. Among the alkali metals Li, Na, K and Rb, lithium has the highest melting point.
3. Among the alkali metals only lithium forms a stable nitride by direct combination of these state-
ments.
(a) 1 and 2 are correct (b) 2 and 3 are correct (c) 1 and 3 are correct (d) 1, 2 and 3 are correct
3
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27. Following are the value of the electron-affinities of (in kJ mol
–1
) the formation of O
–
 and O
2–
 from O
(a) 142, 702 (b) –142, –702 (c) –142, 702 (d) –142, –142
28. The correct order of increasing ionic character is
(a) BeCl
2
 < MgCl
2
 < CaCl
2
 < BaCl
2
(b) BaCl
2
 < CaCl
2
 < MgCl
2
 < BeCl
2
(c) MgCl
2
 < BeCl
2
 < BaCl
2
 < CaCl
2
(d) BaCl
2
 < CaCl
2
 < BeCl
2
 < MgCl
2
29. Which is maximum hydrated?
(a) SiCl
4
(b) AlCl
3
(c) MgCl
2
(d) NaCl
30. Which has maximum ionization potential?
(a) N (b) O (c) Na (d) O
+
31. For Be Z
eff
 = 1.95, for B
x+
, Z
eff
 = 2.30, hence ion is
(a) Be (b) Be
+
(c) Be
2+
(d) Be
3+
32. Stability of ions of Ge, Sn and Pb will be in order
(a) Sn
2+
 < Sn
4+
(b) Pb
4+
 < Pb
2+
(c) Pb
4+
 < Sn
4+
 < Ge
4+
(d) Ge
2+
 < Sn
2+
 < Pb
2+
33. Which is/are correct order of ionic mobility?
(a) Li
+
 < Na
+
 < K
+
(b) Al
3+
 < Mg
2+
 < Na
+
(c) Na
+
 < Mg
2+ 
< Al
3+
(d) K
+
 < Na
+
 < Li
+
Directions (Q. Nos. 34 to 37)
This (IE)
1
 and the (IE)
2
 in kJ mol
–1
 of a few elements are shown below:
Element (IE)
1
(IE)
2
A 2372 5251
B 520 7300
C 900 1760
D 1680 3380
Based on the above information, answer the following questions
34. Which of the above elements is likely to be a reactive metal?
(a) A (b) B (c) C (d) D
35. Which of the above elements is likely to be a reactive non-metal?
(a) A (b) B (c) C (d) D
36. Which represents a noble gas?
(a) A (b) B (c) C (d) D
37. Which of the above elements forms a stable binary halide of the formula MX
2
?
(a) A (b) B (c) C (d) D
38. Which of the following does not reflect the periodicity of element
(a)  Bonding behaviour (b) Electronegativity
(c) Ionisation potential (d) Neutron/ Proton ratio
39. The electron affinity of the members of oxygen of the periodic table, follows the sequence
(a) O > S > Se (b) S > O < Se (c) O < S > Se (d) Se > O > S
40. The process of requiring absorption of energy is
(a) F ? F
–
(b) Cl ? Cl
–
(c) O
–
 ? O
2–
(d) H ? H
–
4
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41. The ionization energy will be maximum for the process.
(a) Ba ? Ba
++
(b) Be ? ? Be
++
(c) Cs ? Cs
+
(d) Li ? Li
+
42. Two elements A & B are such that B. E. of A–A, B–B & A–B are respectively 81 Kcal / mole,
64 Kcal / mole, 76 Kcal / mole & if electronegativity of B is 2.4 then the electronegativity of A may be
approximately
(a) 2.81 (b) 1.8 (c) 0.99 (d) 3.0
43. The correct order of decreasing first ionization energy is
(a) C > B > Be > Li (b) C > Be > B > Li (c) B > C > Be > Li (d) Be > Li>B>C
44. The ions O
2-
, F
-
, Na
+
, Mg
2+
 and Al
3+
 are isoelectronic. Their ionic radii show
(a) a significance decrease from O
2-
 to Al
3+
(b) an increase from O
2-
 to F
-
 and then decrease from Na
+
 to Al
3+
(c) a decrease from O
2-
 to F
-
 and then increase from Na
+
 to Al
3+
(d) a significant increase from O
2-
 to Al
3+
45. Which of the following configuration is expected to have maximum difference in second and third
ionization energies
(a) (1s)
2 
(2s)
2 
(2p)
2
(b) (1s)
2 
(2s)
2 
(2p)
6 
(3s)
2
 (3p)
3
(c) (1s)
2 
(2s)
2 
(2p)
6 
(3s)
2
(d) (1s)
2
 (2s)
2
 (2p)
1
46. The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is :
(a) C > N > O > F (b) O > N > F > C (c) O > F > N > C
.
(d) F > O > N > C
47. The element with the highest first ionization potential is :
(a) boron (b) carbon (c) nitrogen
.
(d) oxygen
48. The first ionization potential in electron volts of nitrogen and oxygen atoms are respectively given by :
(a) 14.6, 13.6
.
(b) 13.6, 14.6 (c) 13.6, 13.6 (d) 14.6, 14.6
49. Atomic radii of fluorine and neon in Angstrom units are respectively given by
(a) 0.72, 1.60
.
(b) 1.60, 1.60 (c) 0.72, 0.72 (d) None of these
50. The electronegativity of the following elements increases in the order :
(a) C, N, Si, P (b) N, Si, C, P (c) Si, P, C, N
.
(d) P, Si, N, C
51. The first ionization potential of Na, Mg, Al and Si are in the order :
(a) Na < Mg > Al < Si
.
(b) Na > Mg > Al > Si
(c) Na < Mg < Al < Si (d) Na > Mg > Al < Si
52. Amongst the following elements (whose electronic configuration are given below), the one having the
highest ionization energy is :
(a) [Ne] 3s
2
 3p
1
(b) [Ne] 3s
2
 3p
3
.
(c) [Ne] 3s
2
 3p
2
(d) [Ar] 3d
10
 4s
2
 4p
3
53. The statement that is not correct for the periodic classification of element, is
(a) The properties of elements are the periodic functions of their atomic numbers
(b) Non-metallic elements are lesser in number than metallic elements
(c) The first ionization energies of elements along a period do not vary in a regular manner with
increase in atomic number
(d) For transition elements the d-subshells are filled with electrons monotonically with increase in atomic
number
.
Page 5


1
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Assignment Inorganic Chemistry         CSIR-NET (June)2015
PERIODIC PROPERTIES
1. Higher values of ionization energies of the 5d transition elements are consistent with the
(a) relatively smaller penetration (b) relatively smaller size of their atoms
(c) relatively smaller effective nuclear charge (d) All the above the correct
2. IE of an element does not depend on
(a) its nuclear charge (b) penetration effect (c) the shielding effect (d) electron neutrality
3. Which represents alkali metals based on (IE)
1
 and (IE)
2
 values?
(IE)
1
(IE)
2
(IE)
1
(IE)
2
(a) X 100 110 (b) Y 95 120
(c) Z 195 500 (d) M 200 250
4. For Cu, effective nuclear charge felt by a 4s-electron is
(a) 1.0 (b) 1.65 (c) 2.2 (d) 2.95
5. Element unq has atomic number
(a) 102 (b) 103 (c) 104 (d) 112
6. In which case effective nuclear charge is minimum?
(a) Be (b) Be
2+
(c) Be
3+
(d) In all cases
7. Most stable cation of element 113 will be
(a) M
+
(b) M
2+
(c) M
3+
(d) M
5+
8. Ionic radii are
(a) Inversely proportional to effective nuclear charge
(b) Directly proportional to effective nuclear charge
(c) Inversely proportional to square of effective nuclear charge
(d) Directly proportional to square of effective nuclear charge.
9. Which of the following order is wrong?
(a) Li
2+
 < Na
+
 < K
+
 < Ca
+
 – Ionic radius (b) NH
3
 < PH
3
 < AsH
3
 – Acidic
(c) Al
2
O
3
 < MgO < Na
2
O < K
2
O – basic (d) Li < Be < B < C – (IE)
1
10. The heat of hydration of Ca
2+
, Sr
2+
 and Ba
2+
 in the decreasing order is
(a) Sr
2+
 > Ba
2+
 > Ca
2+
(b) Ba
2 
> Sr
2+
 > Ca
2+
(c) Ca
2+
 > Ba
2+
 > Sr
2+
(d) Ca
2+
 > Sr
2+
 > Ba
2+
11. The first ionization potential of Al is smaller than that of Mg because
(a) the atomic size of Al < Mg (b) the atomic size of Al > Mg
(c) the atomic number of Al > Mg (d) Al has one unpaired electron in p-orbital
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12. The metal which gives no amphoteric oxide is
(a) AI (b) Cu (c) Zn (d) Sn
13. Stability order of group III A (boron family) element is
(a) Ga
3+
 > Ga
+
(b) Ga
+
 < In
+
 < Tl
+
(c) Both a and b (d) None of these
14. EN of the element (A) is E
1
 and IP is E
2
. Hence, EA will be
(a) 2E
1
 – E
2
(b) E
1
 – 2E
2
(c) E
1
 – E
2
(d) 
1 2
E E
2
?
15. AB is predominantly ionic as A
+
 B
–
 if
(a) (IP)
A
 < (IP)
B
(b) (IP)
B
 < (IP)
A
(c) (EN)
A
 < (EN)
B
(d) (EA)
A
 < (EA)
B
16. Which is incorrect statement?
(a) Ga
+
 salts are better reducing agents (b) Tl
3+
 salts are better oxidising agents
(c) Pb
4+
 salts are better oxidising agents(d) As
5+
 salts are better oxidising agents
17. Which pair is different from the others?
(a) Li – Mg (b) Na – K (c) B – Al (d) Ca – Mg
18. Which of the following ions has the smallest radius?
(a) Ni
2+
(b) Ti
2+
(c) Pt
2+
(d) Zr
2+
19. Pick out the isoelectronic structure from the following:
I. 
+
CH
3
II. H
3
O
+
III. NH
3
IV . 
?
3
CH
(a) I and II (b) III and IV (c) I and III (d) II, III and IV
20. The size of the following species increases in the order:
(a) Mg
2+
 < Na
+
 < F
–
 < Ar (b) F
–
 < Ar < Na
+
 < Mg
2+
(c) Ar < Mg
2+
 < F
–
 < Na
+
(d) Na
+
 < Ar < F
–
 < Mg
2+
21. In the following which configuration of element has maximum electronegativity.
(a) 1s
2
, 2s
2
 2p
5
(b) 1s
2
, 2s
2
 2p
6
(c) 1s
2
, 2s
2
 2p
4
(d) 1s
2
, 2s
2
 2p
6
, 3s
2 
3p
3
22. Decreasing ionization potential for K, Ca & Ba is
(a) Ba> K > Ca (b) Ca > Ba > K (c) K > Ba > Ca (d) K > Ca > Ba
23. Which of the following represents the correct order of electron affinities
(a) Cl > Br > I > F (b) Cl > F < Br < I (c) F > Cl > Br > I (d) Cl > F >Br>I
24. Which has maximum polarizing power in cation
(a) Li
+
(b) Mg
2+
(c) Al
3+
(d) O
2-
25. Ionization energy of the element X(g) is I and the electron affinity of X
+
(g) is E then
(a) I = E (b) I = – E (c) I = 
E
2
(d) I = – 
E
2
26. Consider the following statements
1. Cs
+
 is more highly hydrated than the other alkali metal ions.
2. Among the alkali metals Li, Na, K and Rb, lithium has the highest melting point.
3. Among the alkali metals only lithium forms a stable nitride by direct combination of these state-
ments.
(a) 1 and 2 are correct (b) 2 and 3 are correct (c) 1 and 3 are correct (d) 1, 2 and 3 are correct
3
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27. Following are the value of the electron-affinities of (in kJ mol
–1
) the formation of O
–
 and O
2–
 from O
(a) 142, 702 (b) –142, –702 (c) –142, 702 (d) –142, –142
28. The correct order of increasing ionic character is
(a) BeCl
2
 < MgCl
2
 < CaCl
2
 < BaCl
2
(b) BaCl
2
 < CaCl
2
 < MgCl
2
 < BeCl
2
(c) MgCl
2
 < BeCl
2
 < BaCl
2
 < CaCl
2
(d) BaCl
2
 < CaCl
2
 < BeCl
2
 < MgCl
2
29. Which is maximum hydrated?
(a) SiCl
4
(b) AlCl
3
(c) MgCl
2
(d) NaCl
30. Which has maximum ionization potential?
(a) N (b) O (c) Na (d) O
+
31. For Be Z
eff
 = 1.95, for B
x+
, Z
eff
 = 2.30, hence ion is
(a) Be (b) Be
+
(c) Be
2+
(d) Be
3+
32. Stability of ions of Ge, Sn and Pb will be in order
(a) Sn
2+
 < Sn
4+
(b) Pb
4+
 < Pb
2+
(c) Pb
4+
 < Sn
4+
 < Ge
4+
(d) Ge
2+
 < Sn
2+
 < Pb
2+
33. Which is/are correct order of ionic mobility?
(a) Li
+
 < Na
+
 < K
+
(b) Al
3+
 < Mg
2+
 < Na
+
(c) Na
+
 < Mg
2+ 
< Al
3+
(d) K
+
 < Na
+
 < Li
+
Directions (Q. Nos. 34 to 37)
This (IE)
1
 and the (IE)
2
 in kJ mol
–1
 of a few elements are shown below:
Element (IE)
1
(IE)
2
A 2372 5251
B 520 7300
C 900 1760
D 1680 3380
Based on the above information, answer the following questions
34. Which of the above elements is likely to be a reactive metal?
(a) A (b) B (c) C (d) D
35. Which of the above elements is likely to be a reactive non-metal?
(a) A (b) B (c) C (d) D
36. Which represents a noble gas?
(a) A (b) B (c) C (d) D
37. Which of the above elements forms a stable binary halide of the formula MX
2
?
(a) A (b) B (c) C (d) D
38. Which of the following does not reflect the periodicity of element
(a)  Bonding behaviour (b) Electronegativity
(c) Ionisation potential (d) Neutron/ Proton ratio
39. The electron affinity of the members of oxygen of the periodic table, follows the sequence
(a) O > S > Se (b) S > O < Se (c) O < S > Se (d) Se > O > S
40. The process of requiring absorption of energy is
(a) F ? F
–
(b) Cl ? Cl
–
(c) O
–
 ? O
2–
(d) H ? H
–
4
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41. The ionization energy will be maximum for the process.
(a) Ba ? Ba
++
(b) Be ? ? Be
++
(c) Cs ? Cs
+
(d) Li ? Li
+
42. Two elements A & B are such that B. E. of A–A, B–B & A–B are respectively 81 Kcal / mole,
64 Kcal / mole, 76 Kcal / mole & if electronegativity of B is 2.4 then the electronegativity of A may be
approximately
(a) 2.81 (b) 1.8 (c) 0.99 (d) 3.0
43. The correct order of decreasing first ionization energy is
(a) C > B > Be > Li (b) C > Be > B > Li (c) B > C > Be > Li (d) Be > Li>B>C
44. The ions O
2-
, F
-
, Na
+
, Mg
2+
 and Al
3+
 are isoelectronic. Their ionic radii show
(a) a significance decrease from O
2-
 to Al
3+
(b) an increase from O
2-
 to F
-
 and then decrease from Na
+
 to Al
3+
(c) a decrease from O
2-
 to F
-
 and then increase from Na
+
 to Al
3+
(d) a significant increase from O
2-
 to Al
3+
45. Which of the following configuration is expected to have maximum difference in second and third
ionization energies
(a) (1s)
2 
(2s)
2 
(2p)
2
(b) (1s)
2 
(2s)
2 
(2p)
6 
(3s)
2
 (3p)
3
(c) (1s)
2 
(2s)
2 
(2p)
6 
(3s)
2
(d) (1s)
2
 (2s)
2
 (2p)
1
46. The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is :
(a) C > N > O > F (b) O > N > F > C (c) O > F > N > C
.
(d) F > O > N > C
47. The element with the highest first ionization potential is :
(a) boron (b) carbon (c) nitrogen
.
(d) oxygen
48. The first ionization potential in electron volts of nitrogen and oxygen atoms are respectively given by :
(a) 14.6, 13.6
.
(b) 13.6, 14.6 (c) 13.6, 13.6 (d) 14.6, 14.6
49. Atomic radii of fluorine and neon in Angstrom units are respectively given by
(a) 0.72, 1.60
.
(b) 1.60, 1.60 (c) 0.72, 0.72 (d) None of these
50. The electronegativity of the following elements increases in the order :
(a) C, N, Si, P (b) N, Si, C, P (c) Si, P, C, N
.
(d) P, Si, N, C
51. The first ionization potential of Na, Mg, Al and Si are in the order :
(a) Na < Mg > Al < Si
.
(b) Na > Mg > Al > Si
(c) Na < Mg < Al < Si (d) Na > Mg > Al < Si
52. Amongst the following elements (whose electronic configuration are given below), the one having the
highest ionization energy is :
(a) [Ne] 3s
2
 3p
1
(b) [Ne] 3s
2
 3p
3
.
(c) [Ne] 3s
2
 3p
2
(d) [Ar] 3d
10
 4s
2
 4p
3
53. The statement that is not correct for the periodic classification of element, is
(a) The properties of elements are the periodic functions of their atomic numbers
(b) Non-metallic elements are lesser in number than metallic elements
(c) The first ionization energies of elements along a period do not vary in a regular manner with
increase in atomic number
(d) For transition elements the d-subshells are filled with electrons monotonically with increase in atomic
number
.
5
2637, Hudson Lane, Behind Khalsa College, Near G .T.B. Nagar Metro Station Gate No. 3 & 4, New Delhi - 110009
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54. Which has most stable +2 oxidation state ?
(a) Sn (b) Pb
.
(c) Fe (d) Ag
55. Which of the following has the maximum number of unpaired electrons ?
(a) Mg
2+
(b) Ti
3+
(c) V
3+
(d) Fe
2+
.
56. Which of the following oxide is neutral ?
(a) CO (b) SnO
2
(c) ZnO (d) SiO
2
57. The following acids have been arranged in the order of decreasing acid strength. Identify the correct order
ClOH (I) BrOH (II) IOH (III)
(a) I > II > III (b) II > I > III (c) III > II > I (d) I > III > II
58. The incorrect statement among the following is
(a) IE
1
 of Al is less than IE
1
 of Mg (b) IE
2
 of Mg is greater than IE
2
 of Na
(c) IE
1
 of Na is less than IE
1
 of Mg (d) IE
3
 of Mg is greater than IE
3
 of Al
59. Which of the following are amphoteric ?
(a) B(OH)
3
(b) Sr(OH)
2
(c) Ca(OH)
2
(d) Al(OH)
3
60. The correct order of radii is :
(a) N < Be < B (b) F
–
 < O
2–
 < N
3–
.
(c) Na < Li < K (d) Fe
3+
 < Fe
2+
 < Fe
4+
61. The correct order of acidic strength is :
(a) Cl
2
O
7
 > SO
2
 > P
4
O
10
(b) CO
2
 > N
2
O
5
> SO
3
(c) Na
2
O > MgO > Al
2
O
3
(d) K
2
O > CaO > MgO
62. The set representing the correct order of first ionization potential is :
(a) K > Na > Li (b) Be > Mg > Ca
.
(c) B > C > N (d) Ge > Si > C
63. Identify the least stable ion amongst the following :
(a) Li
+
(b) Be
–
.
(c) B
–
(d) C
–
64. Identify the correct order of acidic strengths of CO
2
, CuO, CaO, H
2
O:
(a) CaO < CuO < H
2
O < CO
2
(b) H
2
O < CuO < CaO < CO
2
(c) CaO < H
2
O < CuO < CO
2
(d) H
2
O < CO
2
 < CaO < CuO
65. The series with the correct order of decreasing ionic size is :
(a) K
+
 > Ca
2+
 > S
2–
 > Cl
–
(b) S
2–
 > Cl
–
 > K
+
 > Ca
2+
(c) K
+
 > Cl
–
 > Ca
2+
 > S
2–
(d) Cl
–
 > K
+
 > S
2–
 > Ca
2+
66. Which one of the following has the highest lattice energy ?
(a) LiCl (b) CaCl
2
(c) LiF (d) KCl
67. Identify the correct option :
In the Periodic Table, on moving from left to right along a period.
(a) the atomic size of the element increases
(b) the first ionization potential of the element decreases
(c) the oxide of the element becomes less basic
(d) the oxide of the element becomes more basic
68. The formal charges on the nitrogen atom from left to right in the azide anion, [N = N = N]
–
are :
(a) +1, –1, –1 (b) –1, +1, –1 (c) –1, –1, +1 (d) –2, +1, 0
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