Question

The stability of carbanions in the following

$\left(\text{i}\right)\text{RC}\equiv {\left(\bar{\text{C}}\right)}^{\text{*}}\left(\text{ii}\right)$ $\left(\text{iii}\right){\left(\text{R}\right)}_2\text{C}=\stackrel{\star }{\bar{\text{C}}\text{H}}\left(\text{iv}\right)$ ${\text{R}}_3\text{C}-\stackrel{\star }{\bar{\text{C}}{\text{H}}_2}$

is in the order of

• A. (iv) > (ii) > (iii) > (i)
• B. (i) > (iii) > (ii) > (iv)
• C. (i) > (ii) > (iii) > (iv)
• D. (ii) . (iii) > (iv) > (i)

Answer 1

Answer: (C)

Stability of carbanion increases with increase in s% and decreases the number of electron releasing group. So the order of stability of carbanions is