Write the reasons for ${\mathrm{CO}}_2$ can be easily liquified and even solidified.

Carbon dioxide ${\mathrm{CO}}_2$:

• It is a colorless gas having a density higher than that of dry air.
• Carbon dioxide consists of carbon covalently bonded to two oxygen atoms.
• It is a non-flammable gas at atmospheric pressure and temperature.

Important Properties:

• ${\mathrm{CO}}_2$ can be easily liquified and even solidified because the intermolecular force attraction between the molecules is minimal.
• Also, Carbon dioxide is having a low melting point $216.5\mathrm{K}$ and boiling point $194.67\mathrm{K}$ so it is easily liquefiable and solidifiable.
• Carbon dioxide undergoes a transition from an excited to a stable state.