Chemical Bonding and Molecular Structure

Which of the following molecules has "NON ZERO" dipole moment value?

1. CCl4
2. HI
3. CO2
4. BF3

Identify the incorrect statement about PCl5.

1. PCl5 possesses two different Cl-P-Cl bond angles
2. All five P-Cl bonds are identical in length
3. PCl5 exhibits sp3d hybridisation
4. PCl5 consists of five P-Cl (sigma) bonds

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

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

Amongst the following, the total number of species NOT having eight electrons around central atom in its outermost shell, is NH3, AlCl3, BeCl2, CCl4, PCl5

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

The correct order of energies of molecular orbitals of N2 molecule, is

1. 1s < 1s < 2s < 2s < 2pz < ( 2px = 2py) < ( 2px = 2py) < 2pz
2. 1s < 1s < 2s < 2s < 2pz < 2pz < ( 2px = 2py) < ( 2px = 2py)
3. 1s < 1s < 2s < 2s < ( 2px = 2py) < ( 2px = 2py) < 2pz < 2pz
4. 1s < 1s < 2s < 2s < ( 2px = 2py) < 2pz < ( 2px = 2py) < 2pz

Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions?

1. ClF3
2. IF5
3. SF4
4. XeF2

Which amongst the following is incorrect statement?

1. The bond orders of O2+, O2, O2- and O22- are 2.5, 2, 1.5 and 1, respectively
2. C2 molecule has four electrons in its two degenerate molecular orbitals
3. H2+ ion has one electron
4. O2+ ion is diamagnetic

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

1. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
2. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
3. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
4. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

The correct order of bond angles in the following compounds/species is :

1. CO2 < NH3 < H2O < +NH4
2. H2O < NH3 < +NH4 < CO2
3. H2O < +NH4 < NH3 < CO2
4. H2O < +NH4 = NH3 < CO2

BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :

1. sp2 and 8
2. sp3 and 4
3. sp3 and 6
4. sp2 and 6