Which of the following do not have molecules in motion? gases solids liquids they all have molecules in motion.

They all have molecules in motion,

you may not think this about solids but the molecules are packed so closely together there is no room to get past each other.

for a liquid the molecules are packed densely but are loosely place, giving them the space to slip past each other, making it possible to form to what ever the liquid is in.

for gas the molecules are not packed so loosely that it is not a definable shape, but can be compressed

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.