Chemical Bonding and Molecular Structure

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

Answer

(3) A-IV, B-II, C-I, D-III

Solution

Concept: count the electrons around the central atom.

A. CCl4, CO2: 8 e⁻ ⇒ octet ⇒ IV

B. BCl3, AlCl3: 6 e⁻ ⇒ incomplete octet ⇒ II

C. NO, NO2: odd electron ⇒ I

D. H2SO4, PCl5: S, P have more than 8 e⁻ ⇒ expanded octet ⇒ III

∴ A-IV, B-II, C-I, D-III

Answer: (3)