Question

The melting points of three solids x, y, z are 298k, 314k, 398k respectively. arrange these in increasing order of their inter particle force of attraction I need the answer urgently, please

Answer 1

Melting point ∞ force of attraction
So particle having high melting point will experience high force of attraction.
i.e, 
Particle " Z " have high melting point, then " Y " and later " X "
∴ It will be in order ,
                               X < Y < Z

Answer 2

if the melting point of a soild is high then its the inter particle force of attraction will be also high
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melting point is directly proportional to force of attraction
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increasing order
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Z(398) -------------> Y(314) ------------>X (298)