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# If enthalpy of atomisation for

Question:

If enthalpy of atomisation for $\mathrm{Br}_{2(1)}$ is $x \mathrm{~kJ} / \mathrm{mol}$ and bond enthalpy for $\mathrm{Br}_{2}$ is $\mathrm{y} \mathrm{kJ} / \mathrm{mol}$, the relation between them :

1. is $x=y$

2. is $x 3. does not exist 4. is$x>y\$

Correct Option: , 4

Solution: