Chemical Bonding and Molecular Structure

Which of the following linear combination of atomic orbitals will lead to formation of molecular orbitals in homonuclear diatomic molecules [internuclear axis in z-direction] ? Choose the correct answer from the options given below:

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

Which of the following statement is true with respect to H2O, NH3 and CH4 ? Choose the correct answer from the options given below:

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

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

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

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

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

The number of molecules/ions that show linear geometry among the following is . SO2, BeCl2, CO2, N3-, NO2, F2O, XeF2, NO2+, I3-, O3

Arrange the following compounds in increasing order of their dipole moment : HBr, H2S, NF3 and CHCl3

1. HBr < H2S < NF3 < CHCl3
2. H2S < HBr < NF3 < CHCl3
3. NF3 < HBr < H2S < CHCl3
4. CHCl3 < NF3 < HBr < H2S

In which one of the following pairs the central atoms exhibit sp2 hybridization ?

1. BF3 and NO2-
2. NH2- and BF3
3. NH2- and H2O
4. H2O and NO2

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 .