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The bond dissociation energies ofX(2),Y(...

The bond dissociation energies of`X_(2),Y_(2)andXY` are in the ratio of`1:0.5:1.DeltaH` for the formation of `XY`is `-200kJmol^(-1)`.The bond dissociation energy of `X_(2)`will be

A

`800 kJ mol^(-1)`

B

`100 kJ mol^(-1)`

C

`200 kJ mol^(-1)`

D

`400 kJ mol^(-1)`

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The correct Answer is:
A
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If the bond dissociation energies of XY , X_(2) and Y_(2) are in the ratio of 1:1:0.5 and DeltaH_(f) for the formation of Xy is -200 KJ//mol . The bond dissociation energy of X_(2) will be :-

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