Question

How melting point of a solid is an indication of the strength of force of attraction between its particles?

Answer 1

Melting point of a solid indicates the strength of the force of attraction between the particles of the solid. On heating a solid, its molecules absorb energy in the form of heat and their kinetic energy increases.

As the kinetic energy increases, the temperature of the solid increases. As a result, the force of attraction between the molecules decreases and the molecules become more and more separated.

lesser the force of attraction lesser will be its melting and higher the force of attraction between molecules higher is the melting point

Hope it makes you clear.
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