Chemical Bonding and Molecular Structure

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

Number of molecules from the following which can exhibit hydrogen bonding is . (nearest integer) CH3OH, H2O, C2H6, C6H6, [figure] , HF, NH3

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 false
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 true

Total number of species from the following with central atom utilising sp2 hybrid orbitals for bonding is . NH3, SO2, SiO2, BeCl2, C2H2, C2H4, BCl3, HCHO, C6H6, BF3, C2H4Cl2

In the Lewis dot structure for NO2-, total number of valence electrons around nitrogen is .