Chemical Bonding and Molecular Structure

Number of molecules/ions from the following in which the central atom is involved in sp3 hybridization is . NO3-, BCl3, ClO2-, ClO3-

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

Which one of the following molecules has maximum dipole moment?

1. CH4
2. NF3
3. NH3
4. PF5

Number of molecules/species from the following having one unpaired electron is . O2, O2-1, NO, CN-1, O22-

The correct statement/s about Hydrogen bonding is/are Choose the correct answer from the options given below:

1. A, B, C only
2. A only
3. A, D, E only
4. A, B, D only

The number of species from the following that have pyramidal geometry around the central atom is S2O32-, SO42-, SO32-, S2O72-

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

Number of compounds / species from the following with non-zero dipole moment is . BeCl2, BCl3, NF3, XeF4, CCl4, H2O, H2S, HBr, CO2, H2, HCl

Arrange the bonds in order of increasing ionic character in the molecules. LiF, K2O, N2, SO2 and ClF3 :

1. N2 < SO2 < ClF3 < K2O < LiF
2. ClF3 < N2 < SO2 < K2O < LiF
3. LiF < K2O < ClF3 < SO2 < N2
4. N2 < ClF3 < SO2 < K2O < LiF

The number of molecules/ion/s having trigonal bipyramidal shape is . PF5, BrF5, PCl5, [PtCl4]2-, BF3, Fe(CO)5

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

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

Select the compound from the following that will show intramolecular hydrogen bonding.

1. [figure]
2. H2O
3. C2H5OH
4. NH3

The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals Choose the most appropriate from the options given below:

1. B, C, D only
2. A, B, C only
3. B and D only
4. A and C only

The number of species from the following in which the central atom uses sp3 hybrid orbitals in its bonding is . NH3, SO2, SiO2, BeCl2, CO2, H2O, CH4, BF3

Which of the following is least ionic?

1. CoCl2
2. KCl
3. BaCl2
4. AgCl

A diatomic molecule has a dipole moment of 1.2 D. If the bond distance is 1 Å, then fractional charge on each atom is 10-1 esu. (Given 1 D = 10-18 esucm)

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

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

The total number of molecular orbitals formed from 2s and 2p atomic orbitals of a diatomic molecule is .

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

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

The molecule / ion with square pyramidal shape is

1. PCl5
2. [Ni(CN)4]2-
3. PF5
4. BrF5

The number of species from the following which are paramagnetic and with bond order equal to one is . H2, He2+, O2+, N22-, O22-, F2, Ne2+, B2

Number of compounds with one lone pair of electrons on central atom amongst following is . O3, H2O, SF4, ClF3, NH3, BrF5, XeF4

The total number of molecules with zero dipole moment among CH4, BF3, H2O, HF, NH3, CO2 and SO2 is .

The total number of anti bonding molecular orbitals, formed from 2s and 2p atomic orbitals in a diatomic molecule is .

Choose the polar molecule from the following:

1. CCl4
2. CO2
3. CH2=CH2
4. CHCl3

Sum of bond order of CO and NO+ is .

The number of non-polar molecules from the following is . HF, H2O, SO2, H2, CO2, CH4, NH3, HCl, CHCl3, BF3