Question

(i) Write the electronic configuration of any one pair of isobars. (ii) The ratio of number of electron in K,L and M Shells of an element is 1:4:1 (i) Identify valency & name of elements

Answer 1

⭐H:- 1s^1 and He:-1s^2.( both hydrogen and helium are isobar).

⭐ k:L:M:- 1:4:1 it's means K shell have 2 electrons,than L shell have 8 than M shell have 2 electrons.

hence this configuration is matched with oxygen.

⭐valency of oxygen is 2.

hey, I think it may helps you.☺️☺️☺️

⭐saurya