State the law of equipartition of energy.

Explanation

According to kinetic theory the average kinetic energy of system of molecules in thermnal equilibrium at tempreture T is uniformly distributed all degrees of freedom (x or y or z direction of motion ) so that each degree of freedom will get `(1)/(2)kT` of energy. This is called law of equipartition of energey.
Average kinectic energy of monatomic molecule `(with int=3)=3xx(1)/(2)kT=(3)/(2)kT`
Average kinectic energy of diatomic molecule at low tempreture `(withint=5)=5xx(1)/(2)kT=(5)/(2)kT`
Average kinectic energy of diamotic molecule at thehigh tempreture `(withint=7)=7xx(1)/(2)kT=(7)/(2)kT`
Average kinectic energy of linear triatomic molecule `(withint=7)=7xx(1)/(2)kT=(7)/(2)kT`
Average kinectic energy of non linear triatomic molecule `(withint=6)=6xx(1)/(2)kT=3kT`.