Which statement is true according to the kinetic theory? a. only gases show random motion of particles. b. only gases and liquids show random motion of particles. c. solids have a fixed shape, so they do not show random motion of particles. d. all states of matter show random motion of particles.

Option (A) is the correct answer.

Explanation:

According to molecular kinetic theory, molecules of a gas collide in a randomly with each other and energy is neither gained or lost during these collisions.

As a result, molecules of a gas occupy almost negligible space of a container in which they are placed. Pressure is caused by the collisions and walls of the container on the gas molecules.

Therefore, we can conclude that the statement only gases show random motion of particles, is true according to the kinetic theory.

a electronegativity decreases beacuse the size of nucleus is bigger.