Determine the exact total number of (sigma) bonds present in one molecule of toluene (methylbenzene, — Hydrocarbons Chemistry Question

💡 Solution & Explanation

Toluene consists of a benzene ring substituted with a methyl group. There are 6 $C-C$ $\sigma$ -bonds within the ring, 5 $C-H$ $\sigma$ -bonds attached to the ring carbons, 1 $C-C$ $\sigma$ -bond connecting the ring to the methyl group, and 3 $C-H$ $\sigma$ -bonds on the methyl group. Total $\sigma$ -bonds = $6 + 5 + 1 + 3 = 15$.