Chemical Bonding and Molecular Structure

The total number of species from the following in which one unpaired electron is present, is . N2, O2, C2-, O2-, O22-, H2+, CN-, He2+

The correct increasing order for bond angles among BF3, PF3 and ClF3 is :

1. BF3 = PF3 < ClF3
2. BF3 < PF3 < ClF3
3. ClF3 < PF3 < BF3
4. PF3 < BF3 < ClF3

Total number of electrons present in ( ) molecular orbitals of O2, O2+ and O2- is .

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

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

Number of molecules from the following which are exceptions to octet rule is . CO2, NO2, H2SO4, BF3, CH4, SiF4, ClO2, PCl5, BeF2, C2H6, CHCl3, CBr4

When A and B are the wave functions of atomic orbitals, then is represented by :

1. A + 2 B
2. A - B
3. A - 2 B
4. A + B

Number of molecules having bond order 2 from the following molecules is . C2, O2, Be2, Li2, Ne2, N2, He2

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

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

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

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

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

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