The correct sequence of bond enthalpy of 'C–X' bond is :

Question

1. CH₃-F < CH₃-Cl < CH₃-Br < CH₃-I 2. CH₃-F > CH₃-Cl > CH₃-Br > CH₃-I 3. CH₃-F < CH₃-Cl > CH₃-Br > CH₃-I 4. CH₃-Cl > CH₃-F > CH₃-Br > CH₃-I

Doubtly AI · Accepted Answer

Answer: 2. CH₃-F > CH₃-Cl > CH₃-Br > CH₃-I Key idea: bond enthalpy decreases as the halogen gets larger (longer, weaker C-X bond). Bond length: C-F < C-Cl < C-Br < C-I, so bond enthalpy: CH₃-F>CH₃-Cl>CH₃-Br>CH₃-I , which is option 2.

The correct sequence of bond enthalpy of 'C–X' bond is :

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