Question

how melting point of a substance indicates the strength of its intermolecular forces of attraction​

Answer 1

Explanation:

The molecules are held together by intermolecular force of attraction. More the force the fusion takes after some time only that means the melting point is high. So molecules with greater molecular forces have high melting point and less molecular forces have low melting point.

Answer 2

Intermolecular force of attraction are responsible for holding the molecules together in a solid. This means that the heat of fusion (heat required to melt a solid) and heat of vaporization (heat required to vaporize a liquid) are determined by the strength of the Intermolecular Forces . So molecules with greater molecular forces have high melting point and less molecular forces have low melting point.