Rank the following deactivating groups in order of increasing deactivating strength, listing the least deactivating first. $$\begin{array} { c c c c }
- \mathrm { COOH } & - \mathrm { CHO } & - \mathrm { SO } _ { 3 } \mathrm { H } & - \mathrm { NO } _ { 2 } \
\text { I } & \text { II } & \text { III } & \text { IV }
\end{array}$$

Question

Rank the following deactivating groups in order of increasing deactivating strength, listing the least deactivating first. $$\begin{array} { c c c c } 
- \mathrm { COOH } & - \mathrm { CHO } & - \mathrm { SO } _ { 3 } \mathrm { H } & - \mathrm { NO } _ { 2 } \
\text { I } & \text { II } & \text { III } & \text { IV }
\end{array}$$

Quizplus · Accepted Answer

The order of deactivating strength is based on the electron-withdrawing ability of the groups. The -CHO group is the least deactivating, followed by -COOH, then -SO3H, and the most deactivating is -NO2.

Rank the Following Deactivating Groups in Order of Increasing Deactivating