Question

Determine the stability order of given carbanions:

• A. $\text{i}>\text{i}\text{i}>\text{i}\text{i}\text{i}$
• B. $\text{i}\text{i}\text{i}>\text{i}>\text{i}\text{i}$
• C. $\text{i}\text{i}\text{i}>\text{i}\text{i}>\text{i}$
• D. $\text{i}\text{i}>\text{i}\text{i}\text{i}>\text{i}$

Answer 1

Answer: (A)

Tertiary carbanion is least stable, so $iii$ is least stable. Primary Carbanion is most stable, so $i$ is most stable.