Why are some elements chemically inert

1.	Why are some elements chemically inert
Answer» Elements react to attain stability by completing octet of electrons, for which they lose, gain or share electrons depending upon their valency.However some elements like inert gases have a completely filled valence orbital. (e.g. Ne = 2,8), and hence are stable and do no need to lose/gain or share electrons, thus making them unreactive

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