Examples of electron withdrawing groups relative to hydrogen are

Question

Examples of electron withdrawing groups relative to hydrogen are (A) - NO 2 (B) - COOH (C) - COO R (D) All of these

Tardigrade Admin · Accepted Answer

All the given examples act as electron withdrawing group relative to hydrogen. Based on the ability of a substituent to withdraw or donate electron density, the substituents can be classified as electron-withdrawing or electron donating groups relative to hydrogen. Halogens and many other group such as nitro (- NO 2), cyano (- CN ), carboxy (- COOH ), ester (- COO R), aryloxy (-OAr, e.g. - OC 6 H 5 ), etc. are electron-withdrawing groups. On the other hand, the alkyl groups like methyl (- CH 3) and ethyl (- CH 2- CH 3) are usually considered as electron donating groups.

Q. Examples of electron withdrawing groups relative to hydrogen are

$- N O_{2}$

$- COO H$

$- COOR$

All of these

Q. Examples of electron withdrawing groups relative to hydrogen are

−NO2​

−COOH

−COOR

All of these

$- N O_{2}$

$- COO H$

$- COOR$