Which among these is not true for a solid?
They have definite shape and volume.
Molecules are very tightly packed.
It is easy to break solids as they have strong intermolecular force.
Molecules attract one another with a strong force.
It is hard to break solids as the molecules attract each other with a strong force.
The molecules of solid have a high intermolecular force of attraction, even then the molecules don't diffuse into one another. Why?