Why is the octet rule important in chemistry?

Explanation:

Octet rule is one of the most important rules in the chemistry which says that atom becomes stable when they have eight electrons in their last shell.

All atoms try to have a complete valence shell.This may happen through transfer of electrons or through sharing of electrons.

Octet rule is used most of the times to determine the valency of elements.

If a atom has electrons in its valence shell,most likely it will have a valency of .This is because it will get electrons due to transfer and complete a octet.

Octet rule also explains the non reactivity of the inert gases.

Since they have complete octet,they are already stable.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.