Question

In the first 20 elements Helium, Neon and Argon are very much inert. Can you predict about their ineptness seeing their electronic configuration.

Answer 1

Helium, Neon and Argon are very much inert becoz by seeing their electronic configuration we can observe that their outermost shell is completely filled. It does not require anymore electron as its shell is already completed and hence it neither loses nor gain electrons.