Chemical Bonding and Molecular Structure · Question 20

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

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

Which of the following molecules is non-polar in nature?

1. NO2
2. POCl3
3. CH2O
4. SbCl5

Which of the following set of molecules will have zero dipole moment?

1. Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3-dichlorobenzene
2. Nitrogen trifluoride, beryllium difluoride, water, 1, 3-dichlorobenzene
3. Boron trifluoride, beryllium difluoride, carbon dioxide, 1, 4-dichlorobenzene
4. Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene

Identify a molecule which does not exist.

1. Li2
2. C2
3. O2
4. He2

Which of the following diatomic molecular species has only bonds according to Molecular Orbital Theory?

1. C2
2. Be2
3. O2
4. N2

Consider the following species : CN+, CN-, NO and CN. Which one of these will have the highest bond order?

1. NO
2. CN-
3. CN+
4. CN

In the structure of ClF3, the number of lone pairs of electrons on central atom ‘Cl’ is

1. one
2. two
3. four
4. three

Which of the following pairs of compounds is isoelectronic and isostructural ?

1. TeI2, XeF2
2. IBr2-, XeF2
3. IF3, XeF2
4. BeCl2, XeF2