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Melting point, enthalpy of vaporisation ...

Melting point, enthalpy of vaporisation and viscosity data of `H_2 O` and `D_2O` is given below:

On the basis of this data explain in which of these liquids intermolecular forces are stronger?

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The melting point, enthalpy of vaporization and viscosity values of all these items depend upon the intermolecular foreces of attraction . Since their values are highter for `D_(2)O` as compared to those of `H_(2)O`, therefore, intermolecular forces of attraction are stronger in `D_(2)O` than in `H_(2)O`.
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