Which of the following will be most stable diazonium salt `RN_(2)^(+)Xbar` ? .

Options

A. `C_6H_5CH_2N_2^+ X^-`
B. `CH_3N_2^+X^-`
C. `CH_3CH_2N_2^+ X^-`
D. `C_6H_5N_2^+ X^-`

Answer

D

Explanation

`C_6H_5CH_2N_2^(+)X^(-), CH_3N_2^(+) X^(-)` and `CH_3CH_2N_2^(+)X^(-)` are primary amine diazonium salt which is readily decomposed and liberate `N_2` gas but `C_6H_5H_2^(+)X^-` is aryl diazonium salt which is stablisied by resonance of benzene ring which is directly attached with nitrogen .