Question

why can the molecules of solids not interchange their position​

Answer 1

HEY!!

Answer:

The intermolecular force of attraction in solids is very strong because of the small intermolecular spaces. This is also the reason why solids cannot be compressed. The molecules in a solid cannot interchange their positions, and hence, solids have a definite shape and definite volume.

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Answer 2

Dut to their inner molecular forces and they are closely packed which leaves a fine space btw atom to atom making the rigid and fixed