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JEE · NEET Previous Year Question

$Which of the following will be the most stable diazonium salt (R N_{2}^{+} X^{-}) ?$

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

A $CH_{3} N_{2}^{+} X^{-}$
B $C_{6} H_{5} N_{2}^{+} X^{-}$
C $CH_{3} CH_{2} N_{2}^{+} X^{-}$
D $C_{6} H_{5} CH_{2} N_{2}^{+} X^{-}$

Correct answer: B

Solution

(b) : Out of the given diazonium salts, C_{6} H_{5} N_{2}^{+} X is resonance stabilised hence most stable.

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