Question

1. how many lone pairs of electrons are on the central atom in the lewis structure of hcn? a. 0 b. 2 c. 3 d. 1 e. 4

Explanation:

Step1: Determine central atom

In HCN, carbon (C) is the central atom.

Step2: Draw Lewis structure

H - C ≡ N. Carbon forms a single - bond with hydrogen and a triple - bond with nitrogen.

Step3: Count lone pairs on central atom

Carbon has no lone pairs of electrons.

Answer:

a. 0