Consider following groups and write number of groups which have

Engineering

Chemistry

Inductive Effect

Basic Concepts of GOC

Basic concepts of organic chemistry

Question

Consider following groups and write number of groups which have –I effect

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The –I effect (negative inductive effect) occurs when a group withdraws electron density through sigma bonds. Groups with high electronegativity or a positive charge exhibit this effect.

Analyzing the given groups:

${CH}_{3}$ (methyl) is electron-donating (+I).

${CH}_{2} Cl$ (chloromethyl) is electron-withdrawing (–I) due to the Cl atom.

${({CH}_{3})}^{+}$ (carbocation) is strongly electron-withdrawing (–I) due to the positive charge.

${CH}_{2} {CH}_{3}$ (ethyl) is electron-donating (+I).

Therefore, only two groups have the –I effect.

Final Answer: 2