Q7 · CSIR-NET Chemistry, June 2021

Paper: CSIR-NET June 2021 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Hydrogen Bonding Weak Interactions · Marks: 2 · Difficulty: Medium

The total number of lone pairs of electrons on all the atoms in cyanogen azide and thiocyanogen respectively, are

(a)4 and 6

(b)6 and 6

(c)3 and 4

(d)4 and 4

Answer

Answer: A ✓ checked by 4AB · confidence high

Explanation

Cyanogen azide N≡C–N₃: nitrile N 1, the N bonded to C 1, central N 0, terminal N 2 → 4. Thiocyanogen N≡C–S–S–C≡N: each N 1, each S 2 → 6.

Study loop for Chemical Bonding

1. Practise the PYQsPrevious-year questions, with answers

· Browse this chapter in the app