MHT CET 2026 Chemistry question

Which of the following is the correct decreasing order of bond dissociation enthalpy of halogens ?

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

Answer: (C)

Solution

The bond dissociation enthalpies of halogens (kJ/mol) are: 242, 193, 158, 151. Down the group the bond enthalpy normally decreases because the atoms get larger and the bond longer, but is anomalous: its very small size gives strong lone

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Question ID VK-100874