Question

which of the following has least space between its molecules​

Answer 1

Solids have least space between its molecules​.

Difference between Solid Liquid and Gases

Solids Liquids Gases

Highly Strong intermolecular forces between the molecules, leads to a definite volume in Solids. The intermolecular forces are stronger than gases but weaker than solids. The intermolecular forces are practically non-existent. Thus, there is no definite volume.

Solids have a definite shape to them. Liquids do not have a definite shape. Gases do not have a definite shape.

The intermolecular space between solids is absent. The intermolecular space is moderate but present. The intermolecular space is free-flowing and plenty.

The force of attraction between the molecules is incredibly high. The force of attraction between molecules is pretty moderate. There is no intermolecular force of attraction between the molecules.

They are incompressible. Liquids cannot be compressed. Gases can be compressed quite easily.

Solids have a definite shape and volume. Liquids have a definite volume. Gases have no definite volume.

Solid is one of the four fundamental states of matter (the others being liquid, gas and plasma). The molecules in a solid are closely packed together and contain the least amount of kinetic energy. A solid is characterized by structural rigidity and resistance to a force applied to the surface. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire available volume like a gas. The atoms in a solid are bound to each other, either in a regular geometric lattice (crystalline solids, which include metals and ordinary ice), or irregularly (an amorphous solid such as common window glass). Solids cannot be compressed with little pressure whereas gases can be compressed with little pressure because the molecules in a gas are loosely packed.

The branch of physics that deals with solids is called solid-state physics, and is the main branch of condensed matter physics (which also includes liquids). Materials science is primarily concerned with the physical and chemical properties of solids. Solid-state chemistry is especially concerned with the synthesis of novel materials, as well as the science of identification and chemical composition.