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  • The correct sequence of bond enthalpy of 'C-X' bond is :Option: 1 <img alt="CH_{3}-F< CH_{3}-Cl< CH_{3}-Br< CH_{3}-I" src="/latex-im

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

Option: 1

CH_{3}-F< CH_{3}-Cl< CH_{3}-Br< CH_{3}-I


Option: 2

CH_{3}-F> CH_{3}-Cl> CH_{3}-Br> CH_{3}-I


Option: 3

CH_{3}-F< CH_{3}-Cl> CH_{3}-Br> CH_{3}-I


Option: 4

CH_{3}-Cl> CH_{3}-F> CH_{3}-Br> CH_{3}-I


Answers (1)

best_answer

Bond strength depends upon the extent of overlap.  As the size difference increases, the bond energy or the bond strength decreases as the overlap becomes less effective.

Thus, as the size of halogen increases, the C-X bond energy decreases.

Therefore, the correct order is 

CH_{3}-F> CH_{3}-Cl> CH_{3}-Br> CH_{3}-I

The correct answer is option 2.

Posted by

chirag

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