Which of the following reactive intermediates absolutely DOES NOT undergo hyperconjugation (no-bond — GOC and Organic Chemistry Basics Chemistry Question

💡 Solution & Explanation

Hyperconjugation involves the delocalization of $\sigma$ -electrons into an adjacent empty p-orbital or $\pi^*$ anti-bonding orbital. A carbanion already possesses a completely filled, non-bonding orbital (lone pair) and rejects hyperconjugation due to electron repulsion.