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The energy of molecules present on the surface of a substance is

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Dependent on nature of substance

Greater than that of interior molecules

Less than that of interior molecules

Equal to that of molecules in bulk

answer is B.

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Detailed Solution

Molecules at the surface are surrounded by different types of molecules. So, their net intermolecular force of interaction is not zero. As a result, they have more energy than the interior molecules.

Hence, option (B) is correct.

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