Question

Please answer this question as soon as possible.
I have my NSTSE exam tomorrow.

Which of the following electronic configuration of an atom could be that of a non metal?

( A) 2,8,1
(B) 2,8,2
(C) 2, 8,3
(D}2, 8,5

Answer 1

Hey user!

Here's the answer you are looking for

Non metals are the ones that accept electron to complete their octet. They cannot lose all of their electrons present in their valency shell as this process requires a large amount of energy.

You can label any compound as metal or non metal just by seeing it's valence shell electrons.

Generally, metals have 1, 2 and 3 valence electrons, whereas, non metals have 5, 6, 7 valence electrons.

So, the answer to your question is (d) 2, 8, 5 (which is Phosphorus)


★ HOPE THAT HELPS ☺️ ★