Chemical Bonding and Molecular Structure

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