NEET  >  Chemistry Class 11  >  31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties Download as PDF

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties


Test Description

35 Questions MCQ Test Chemistry Class 11 | 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties for NEET 2022 is part of Chemistry Class 11 preparation. The 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties questions and answers have been prepared according to the NEET exam syllabus.The 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties below.
Solutions of 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties questions in English are available as part of our Chemistry Class 11 for NEET & 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties solutions in Hindi for Chemistry Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties | 35 questions in 72 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 11 for NEET Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 1

The electronic configuration of four elements are given below. Which elements does not belong to the same family as others ? [1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 1

A. B. D are the configuration of Zn, Cd and Hg respectively which belongs to the same family. But c is the configuration of chlorine which belongs to halogen family.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 2

In the periodic table, with the increase in atomic number, the metallic character of an element [1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 2

Metallic character decreases in a period and increases in a group.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 3

Elements of which of the following groups will form anions most readily ? [1992]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 3

Electron affinity values are high in case of halogen because halogens have seven electrons (ns2np5) in the valence shell, they have a strong tendency to acquire the nearest inert gas configuration by gaining an electron from the metallic atom and form halide ions easily.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 4

Which of the following sets has strongest tendency to form anions ? [1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 4

N, O and F (p-block elements) are highly electronegative non metals and will have the strongest tendency to form anions by gaining electrons from metal atoms.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 5

One would expect proton to have very large

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 5

Proton (H+) being very small in size would have very large hydration energy.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 6

Na+, Mg2+, Al3+ and Si4+ are isoelectronic. The order of their ionic size is [1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 6

Amongst isoelectronic ions, the size of the cation decreases as the magnitude of the charge increases.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 7

If the atomic number of an element is 33, it will be placed in the periodic table in the

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 7

The electronic configuration of element with atomic number 33 is 1s22s22p63s23p63d104s24p3
As, its last shell have five electrons
and hence, its group is 10 + 5 = 15th or V A.
Hence,it lies in the 15th group.
 

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 8

In the periodic table from left to right in a period, the atomic volume [1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 8

Atomic volume is the volume occupied by one gram of an element. Within a period from left to right, atomic volume first decreases and then increases due to increases of nuclear charge and increase in the number of electrons in the valence shell.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 9

Which electronic configuration of an element has abnormally high difference between second and third ionization energy ? [1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 9

Abnormally high difference between 2nd and 3rd ionization energy means that the element has two valence electrons, i.e., configuration (d)

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 10

One of the characteristic properties of non-metals is that they

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 10

Non-metal like halogens are strongest oxidizing agents according to electrochemical series they form acidic oxides like SO2 they form anion by electron gain and they are highly electronegative.
(fluorine is most electronegative element of whole periodic table)

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 11

The electronic configuration of an element is 1s2 2s2 2p6 3s2 3p3 . What is the atomic number of the element, which is just below the above element in the periodic table? [1995]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 11

Atomic number of the given element is 15 and it belongs to 5th group. Therefore atomic number of the element below the above element = 15 + 18 = 33.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 12

The element, with atomic number 118, will be

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 12

Electronic configuration of element with atomic number 118 will be [Rn]5f146d10 7s27p6. Since its elctronic configuration in the outer most orbit (ns2np6) resemble with that of inert or noble gases, therefore it will be noble gas element.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 13

Which one of the following ions will be the smallest in size? [1996]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 13

Greater is the positive charge on atom, large is effective nuclear charge. Hence smaller is the size

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 14

Which of the following does not represent the correct order of the properties indicated [1997]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 14

In a period on moving from left to right ionic radii decreases.

(a) So order of cationic radii is Cr2+ > Mn2+  > Fe2+ > Ni2+ and

(b) Sc > Ti > Cr > Mn (correct order of atomic radii)

(c) For unpaired electrons Mn2+ (Five)  Ni2+ (Two) < Co2+ (Three)<Fe2+ (Four )

(d) For unpaired electrons Fe2+(Four) < Co2+ (Three) <Ni2+ (Two)<Cu2+(One)

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 15

The first ionization potentials (eV) of Be and B respectively are [1998]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 15

First ionisation potential of Be is greater than boron due to following configuration 4Be=1s2,2s2 5B=1s2,2s22p1 Order of attraction of electrons towards nucleus 2s>2p, so more amount of energy is required to remove the electron with 2sorbital in comparison to 2p orbital.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 16

Of the given electronic configurations for the elements, which electronic configuration indicates that there will be abnormally high difference in the second and third ionization energy for the element? [1999]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 16

Mg = 1s2 22 2p6 3s2 After removing of 2 electron, the magnesium acquired noble gas configuration hence removing of 3rd electron will require large amount of energy.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 17

Correct order of first IP among following elements Be, B, C, N, O is [2001]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 17

Be – 1s22s2; B – 1s22s22p1; C – 1s22s22p2; N – 1s22s22p3; O – 1s22s22p4. IP increases along the period. But IP of Be > B. Further IP of O < N because atoms with fully  or partly filled orbitals are most stable and hence have high ionisation energy.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 18

Which of the following order is wrong? [2002]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 18

Along the period, I.P. generally increases but not regularly. Be and B are exceptions. First I.P. increases in moving from left to right in a period, but I.P. of B is lower than Be.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 19

An atom has electronic configuration 1s2 2s2 2p6 3s2 3p6 3d3 4s2, you will place it in which group?

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 19

The electronic configuration clearly suggest that it is a d-block element (having contiguration (n – 1) d1– 10 ns0 – 2) which starts from III B and goes till II B. Hence with d3 configuration it would be classified in the group.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 20

Which of the following statements is true?         [2002]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 20

This is because of inter-electronic replusions between lone pairs.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 21

Among K, Ca, Fe and Zn the element which can form more than one binary compound with chlorine is [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 21

Among the given options, only Fe shows variable oxidation states so it can form two chlorides, viz. FeCl2 and FeCl3.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 22

Ionic radii are [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 22

Ionic radii are inversely proportional to effective nuclear charge.
Ionic radii in the nth orbit is given as

when n = principal quantum number
Z-effective nuclear change.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 23

Which one of the following oxides is expected to exhibit paramagnetic behaviour? [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 23

Due to odd number of electr on s in ClO2.

Therefore   

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 24

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomi c species? [2 00 5]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 24

The amount of energy released when an electron is added to an isolated gaseous atom to produce a monovalent anion is called electron gain enthalpy.
Electron affinity value generally increase on moving from left to right in a period however there are exceptions of this rule in the case of those atoms which have stable configuration. These atoms resist the addition of extra electron, therefore  the low value of electron affinity

On the other hand Cl because of its compariti very bigger size than F, allow the addition of an extra electron more easily.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 25

Identify the correct order of the size of the following: [2007]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 25

For i soelectronic species, size of anion increases as negative charge increases whereas size of cation decreases with increase in positive charge. Further ionic radii of anions is more than that of cations. Thus the correct order is          
Ca++ < K+ < Ar < Cl < S– –

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 26

Which of the following electronic configuration an atom has the lowest ionisation enthalpy? 

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 26

The electronic configuration 1s2 2s22p5 3s1 shows lowest ionisation energy because this configuration is unstable due to the presence of one electron is s- orbital. Hence, less energy is required to remove the electron.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 27

Which one of the following ionic species has the greatest proton affinity to form stable compound?

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 27

Proton affinity decreases in moving across the period from left to right due to increase in charge, within a group the proton affinities decreases from to p to bottom.
Nitrogen family > Oxygen family > Halogens

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 28

The stability of + 1 oxidation state increases in the sequence: [2009]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 28

The stability of +1 oxidation state increases from  aluminium to thallium i.e.
Al < Ga < In < Tl

Due to inert pair effect, as we move down the group. Lower oxidation state stablises so order of +1 oxidation state is:

Al < Ga < In < Tl

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 29

Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy? [2009]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 29

The smaller the atomic size, larger is the value of ionisation potential. Further the atoms having half filled or fully filled orbitals are comparitively more stable, hence more energy is required to remove the electron from such atoms.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 30

The correct order of the decreasing ionic radii among the following isoelectronic species are :

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 30

Among the isoelectronic species, size increases with the increase in negative charge. Thus S2– has the highest negative charge and hence largest in size followed by Cl, K+ and Ca.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 31

Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl ? [2010]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 31

O < S < F < CI

Electron gain enthalpy – 141 – 200 – 333 – 349 kJ mol–1

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 32

Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is : [2010]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 32

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 33

What is the value of electron gain enthalpy of Na+ if IE1 of Na = 5.1 eV ? [2011M]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 33

IE1 of Na = – Electron gain enthalpy of Na+                    = – 5.1 Volt.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 34

Identify the wrong statement in the following: [2012]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 34

As the positive charge increases on metal cation, radius decreases. This is due to the fact that nuclear charge in the case of a cation is acting on lesser number of electrons and pulls them closer.

31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 35

Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O? [NEET Kar. 2013]

Detailed Solution for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties - Question 35

As the nuclear charge increases, the force of attraction between the nucleus and the incoming electron increses and hence the elecron gain enthalpy becomes more negative, hence the correct order is Ca   <   Al    <   C    <   O   <    F

204 videos|331 docs|229 tests
Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties Page
In this test you can find the Exam questions for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties solved & explained in the simplest way possible. Besides giving Questions and answers for 31 Years NEET Previous Year Questions: Classification of Elements & Periodicity in Properties, EduRev gives you an ample number of Online tests for practice