Question

Which electronic configuration favours the inert or noble behaviour of elements????

Answer 1

A stable electronic configuration, in which the outermost shell is fully filled with electrons favours the noble behaviour of elements. For instance. Neon 2.8
Argon 2.8.8

Answer 2

a stable electronic configuration that is the element is in octet condition favours inert or noble behaviour of elements.
Eg.helium-2
    neon-2,8
    argon-2,8,8