Question

Why are particles in solid closely packed? ​

Answer 1

the particles don't move,solids have a definite shape and volume, and can't flow. Because theparticles are already packed closelytogether, solids can't easily be compressed. Because there are lots ofparticles in a small volume, solids are dense

Answer 2

Molecules of solid does not move because they have no space to move.

Also they have more Molecules in solid