MHT CET 2024 Chemistry question

Which alkyl halide has highest bond enthalpy of C-X bond ?

(A)
(B)Correct
(C)
(D)

Answer: (B)

Solution

The C-X bond enthalpy depends on the extent of orbital overlap between carbon (2p/sp3) and the halogen's valence orbital. Fluorine is the smallest halogen, uses a orbital of similar size to carbon's, and gives the best overlap and the shortest bond (139 pm). As size of X increases down the

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Question ID VK-096809