Question

Which of the following does not show resonance effect?

• A. 1, 3-Butadiene
• B. Acrylonitrile
• C. Nitrobenzene
• D. Isopropyl isothiocyanate

Answer 1

Answer: (D)

Isopropyl isothiocyanate

Answer 2

Resonance effect involves delocalisation of $?$-electrons of two or more conjugated double bonds or non-bonding electrons and $?$-electrons of a double bond. $\underset{\text{Isopropyl isothiocyanate}}{ {(CH_{3})_{2}CH - SC \equiv N}}$does not show resonance effect.