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Test: Chemical Bonding- 3


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30 Questions MCQ Test Inorganic Chemistry | Test: Chemical Bonding- 3

Test: Chemical Bonding- 3 for Chemistry 2022 is part of Inorganic Chemistry preparation. The Test: Chemical Bonding- 3 questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Chemical Bonding- 3 MCQs are made for Chemistry 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Chemical Bonding- 3 below.
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Test: Chemical Bonding- 3 - Question 1

Which is not paramagnetic among the following?

Test: Chemical Bonding- 3 - Question 2

Structure of SbF4- is similar with:

Test: Chemical Bonding- 3 - Question 3

The correct non-linear and iso-structural pair is:

Detailed Solution for Test: Chemical Bonding- 3 - Question 3

In B the central atoms are S and I+ respectively, having 6 e- each and the others are from G-VII. Hence, they will have the same lone pair repulsion.

Hence B is correct.

Test: Chemical Bonding- 3 - Question 4

Among the following pairs, those in which both the species have the similar shape:

(I) N3-, XeF2
(II) [ClF2]+, [ICl2]+
(III) [ICl4]+, [PtCl4]2-
(IV) XeO3, SO3

Test: Chemical Bonding- 3 - Question 5

According to VSEPR theory, the molecule/ ion having ideal tetrahedral shape is:

Test: Chemical Bonding- 3 - Question 6

Which among are super valent species:

(I) NO
(II) NO2
(III) PCl5
(IV) SF6

Test: Chemical Bonding- 3 - Question 7

Correct order of bond angles is:

Detailed Solution for Test: Chemical Bonding- 3 - Question 7

Electronegativity decreases down the group, the electron density also decreases and consequently the repulsive interactions between the electron pairs also decrease thereby decreasing the bond angle H-M-H

 

Test: Chemical Bonding- 3 - Question 8

The compound pair which shows correct order of angle:

(I) NH3 > PH3
(II) H2S < H2O
(III) NO2+ > NO2
(IV) NO2+ > NO2
(V) NO2 > NO2+

Detailed Solution for Test: Chemical Bonding- 3 - Question 8

a) NH3 ammonia has bond angle = 107.8 deg.
Bond angle of Ph3 = 93 deg.

NH3 > PH(True)

b) The bond angle of H2O is 105 deg
The bond angle of H2S is 90 deg

H2S < H2O (True)

c) bond angle of NO2+ is 180 deg
bond angle of NO2 is 134.4 deg

NO2+ > NO(True)

d)  bond angle of NO2+ is 180 deg

 bond angle of NO2- is 115 deg

NO2+ > NO2– (True)

Test: Chemical Bonding- 3 - Question 9

The bond energies of H2, F2 and Cl2 decreases in the following order:

Test: Chemical Bonding- 3 - Question 10

Arrange the following molecules in order of increasing bond polarity :

(I) H2O
(II) NH3
(III) PH3
(IV) H2S

Detailed Solution for Test: Chemical Bonding- 3 - Question 10

Correct Answer :- c

Explanation : The bond polarity is directly proportional to the electronegativity of the atom.

As we move down the group, radius of elements increases and electronegativity decreases so bond angle decreases.

So, bond polarity will be : H2O < NH3< H2S < PH3

Test: Chemical Bonding- 3 - Question 11

The element NaCl and Kr crystallizes in a cubic structure. While NaCl is a solid at room temperature, Kr is a gas? The reason for this is:

Test: Chemical Bonding- 3 - Question 12

Which of the following molecules will have a permanent dipole moment?

Test: Chemical Bonding- 3 - Question 13

The molecules NO2 and N2O4 are respectively:

Detailed Solution for Test: Chemical Bonding- 3 - Question 13

Paramagnetism is due to the presence of at least one unpaired electron in the molecule. Though NO2 is paramagnetic, its dimer, N2O4, is diamagnetic. The two unpaired electrons in the two NO2 units get paired while forming the dimer, and so N2O4 is diamagnetic with even number of electrons.

Test: Chemical Bonding- 3 - Question 14

The molecule which has a zero dipole moment is:

Test: Chemical Bonding- 3 - Question 15

Ion-dipole interactions are:

Test: Chemical Bonding- 3 - Question 16

Which is/are paramagnetic among:

(I) S2 gas
(II) O2
(III) NO2+
(IV) CaH2

Test: Chemical Bonding- 3 - Question 17

Which has the tendency to form covalent compound?

Test: Chemical Bonding- 3 - Question 18

The molecule which show back donation is:

Test: Chemical Bonding- 3 - Question 19

Nitrogen forms N2​ but phosphorus is converted into P4​ from P2. The reason for this is:

Detailed Solution for Test: Chemical Bonding- 3 - Question 19

Due to larger atomic size P is unable to form pi bond and so it is tetra-atomic in which each P atom is linked with 3 other P atoms by 3 sigma bonds. 

But, due to smaller atomic size N forms 1 sigma and 2 pi bonds i.e. triple bonds with other N atom and exists as diatomic molecules. Hence the bonding is responsible for that.

 Phosporous form  P4​ because in  P2​  pπ-pπ bond is weaker.

Test: Chemical Bonding- 3 - Question 20

Which has an exact angle of 120° among:

Detailed Solution for Test: Chemical Bonding- 3 - Question 20

Boron trifluoride is planar and the bond angle is 120 degrees. This can be predicted from VSEPR theory. There are three bonding pairs of electrons and no lone pairs on the central atom

Test: Chemical Bonding- 3 - Question 21

The correct order of bond angles θ1, θ2 and θ3 in the following is

Test: Chemical Bonding- 3 - Question 22

Correct order of bond angle is:

Test: Chemical Bonding- 3 - Question 23

Correct order of bond angle is:

Test: Chemical Bonding- 3 - Question 24

Which of the following is correct:

Test: Chemical Bonding- 3 - Question 25

Which of the following does not exist:

Detailed Solution for Test: Chemical Bonding- 3 - Question 25

PHand NIdoesnt exist.

Test: Chemical Bonding- 3 - Question 26

Which of the following is most polar bond:

Test: Chemical Bonding- 3 - Question 27

Which will have zero dipole moment:

Test: Chemical Bonding- 3 - Question 28

Which of the following has highest dipole moment:

Test: Chemical Bonding- 3 - Question 29

Shape of O2F2 is similar to that of:

Test: Chemical Bonding- 3 - Question 30

Which have trigonal planar geometry:

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