Primary radicals are less stable than tertiary radicals.

Name: Primary radicals are less stable than tertiary radicals.
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Question

Quizplus · Accepted Answer

This is because primary radicals have only one alkyl group attached to the carbon with the unpaired electron, whereas tertiary radicals have three alkyl groups attached to the carbon with the unpaired electron. The more alkyl groups there are, the more stable the radical is due to hyperconjugation and steric hindrance effects.

Primary Radicals Are Less Stable Than Tertiary Radicals