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Heat of atomisation of NH3 and N2H4 are...

Heat of atomisation of `NH_3 and N_2H_4 ` are `x kcal mol^(-1)` respectively. Calculate average bond energy of N - N bond.

A

`(4y-3x)/(2)" kcal mol"^(-1)`

B

`(2y-3x)/(3)" kcal mol"^(-1)`

C

`(4y-3x)/(4)" kcal mol"^(-1)`

D

`(3y-4x)/(3)" kcal mol"^(-1)`

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