Q. 44

In the following

Answer :

(i)

We know that the thermal energy is the kind of energy which is generated due to the motion of atoms or molecules. The motion of molecules tries to keep the molecules away from each other, but the intermolecular forces of attraction is trying to keep the molecules or atoms together.


Hence, we can see the two forces are acting in opposite direction so, there is a need of balance between two forces.


As the different molecules have different strength of intermolecular forces and also different values of the thermal energy as well. Hence, the balance between two forces leads to existence of three states of matter.


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