The bond energies of $F_{2}, C l_{2}, B r_{2}$ , and $I_{2}$ are 155 kJ $m o l^{- 1},$ 244 kJ $m o l^{- 1}$ , 193 kJ $m o l^{- 1}$ and 151 kJ $m o l^{- 1}$ respectively. The weakest bond will be in:

B r_{2}

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C l_{2}

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F_{2}

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I_{2}

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Solution

The correct option is C $I_{2}$
Since the bond energy of $I_{2}$ is least, it's bond will be weakest.

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