Question

the lewis structure for the ion, hco₂⁻, should show ____ single bond(s), double bond(s), and ____ lone pair(s).

o 3, 0, 6
o 2, 2, 4
o 2, 1, 5
o 4, 1, 0
o 1, 2, 4

Explanation:

Step1: Draw Lewis structure

Carbon is the central atom. Hydrogen is bonded to carbon with a single - bond. One oxygen is bonded to carbon with a single - bond and has 3 lone - pairs, and the other oxygen is double - bonded to carbon and has 2 lone - pairs.

Step2: Count bonds and lone pairs

There are 2 single bonds (C - H and C - O), 1 double bond (C=O), and 5 lone pairs (3 on one O and 2 on the other O).

Answer:

C. 2, 1, 5