Question

What do you mean by molecular motion?
I want to know brief and exact defination.

Answer 1

the movement of electrons and neutrons in the molecule is called molecular movement

Answer 2

random movement of microscopic particles suspended in a fluid, caused by bombardment of the particles by molecules of the fluid. First observed in 1827, it provided strong evidence in support of the kinetic theory of molecules. [C19: named after Robert Brown].