Chemical Bonding and Molecular Structure · Question 15

Identify the molecule (X) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among HNO3, H2SO4, NF3 and O3. Choose the correct bond angle made by the central atom of the molecule (X).

1. 107
2. 102
3. 120
4. 116

Which statements are NOT TRUE about XeO2F2? Choose the correct answer from the options given below :

1. B, D and E Only
2. B and D Only
3. B, C and E Only
4. A and D Only

Two p-block elements X and Y form fluorides of the type EF3. The fluoride compound XF3 is a Lewis acid and YF3 is a Lewis base. The hybridizations of the central atoms of XF3 and YF3 respectively are

1. sp2 and sp3
2. Both sp3
3. Both sp2
4. sp3 and sp2

The formal charges on the atoms marked as (1) to (4) in the Lewis representation of HNO3 molecule respectively are [figure]

1. 0, 0, -1, +1
2. 0, -1, 0, +1
3. 0, +1, 0, -1
4. +1, 0, 0, -1

Among H2S, H2O, NF3, NH3 and CHCl3, identify the molecule (X) with lowest dipole moment value. The number of lone pairs of electrons present on the central atom of the molecule (X) is :

1. 3
2. 2
3. 0
4. 1

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below:

1. Both Statement I and Statement II are true
2. Statement I is true but Statement II is false
3. Statement I is false but Statement II is true
4. Both Statement I and Statement II are false

The correct increasing order of C-H(A), C-O(B), C=O(C) and C N(D) bonds in terms of covalent bond length is :

1. D < C < B < A
2. D < C < A < B
3. A < B < C < D
4. A < D < C < B

Match the List I with List II. Choose the correct answer from the options given below:

1. A-IV, B-III, C-II, D-I
2. A-III, B-IV, C-I, D-II
3. A-II, B-I, C-IV, D-III
4. A-III, B-IV, C-II, D-I

In SO2, NO2- and N3-, the hybridizations at the central atom are respectively :

1. sp2, sp2 and sp2
2. sp, sp2 and sp
3. sp2, sp and sp
4. sp2, sp2 and sp

Which of the following molecule(s) show/s paramagnetic behavior? Choose the correct answer from the options given below:

1. A & C only
2. A & E Only
3. A & D Only
4. B Only