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JEE CHEMISTRY MCQ: 14 TH GROUP ELEMENTS (P-BLOCK)

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Which of the following has the minimum heat of dissociation?
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Correct option: D
[(CH3)3N→B(CH3)3][{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_3}\mathrm{N} \to \mathrm{B}{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_3}]
Option D ([(CH3)3N→B(CH3)3][{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_3}\mathrm{N} \to \mathrm{B}{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_3}]) is correct because the steric hindrance is greatest in this option, leading to the weakest interaction and thus the minimum heat of dissociation.

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