The heat of atomization of a compound `XY_(3)` in gaseous state is E kJ `mol^(-1)` what is the X-Y bond energy of kJ `mol^(-1)` unit?

Options

A. `E`
B. `3E`
C. `(E)/(3)`
D. `(E)/(6)`

Answer

C

Explanation

`XY_(3)(g)toX(g)+3Y(g):DeltaH=E` kJ `mol^(-1)`
`therefore` B.E of `XY=(E)/(3)` as `XY_(3)` contains three X-Y bonds.