The breaking of which of the following bond is most endothermic?
A
F−F
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B
Cl−Cl
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C
Br−Br
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D
I−I
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Solution
The correct option is BF−F The bond dissociation energy is directly related to the bond enthalpy. The higher the bond dissociation energy, the more endothermic the reaction will be. The order of bond dissociation energies is: