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The correct sequence of bond enthalpy of 'C–X' bond is:
A
$CH_3-F>CH_3-Cl>CH_3-Br>CH_3-I$
B
$CH_3-FCH_3-Br>CH_3-I$
C
$CH_3-Cl>CH_3-F>CH_3-Br>CH_3-I$
D
$CH_3-F<CH_3-Cl<CH_3-Br<CH_3-I$
Detailed Solution
As the size of the halogen increases from F to I, the C–X bond length increases and the bond enthalpy decreases.
Correct sequence: $CH_3-F > CH_3-Cl > CH_3-Br > CH_3-I$