In which of the following, the molecules are closest to each other?
Solid
As we know that in the gaseous and liquid state the molecules are able to move more freely as compared to solid state. Therefore the molecules are closer to each other in case of the solid state.
A liquefied gas is a gas that has been converted to the liquid state by applying pressure and reducing the temperature. As the molecules are in the liquid state they can move freely, and the distance between them is not as low as solids.