Question

In solids the molecules .............. about from their mean position​

Answer 1

Answer:oscillates

Explanation:

The molecules are closely packed together in solid and they are arranged in 3d pattern (lattice) that is repeated throughout. As the distance between molecules are small so attractive force between molecules are large and keep them in a particular positions. Note that the attractive force between molecules turn to repulsive force as the distance approaches to zero between the molecules. They cannot move to each other so due to repulsive and attractive force molecules oscillates in solid state.