Question

The electronic configuration of some neutral atoms are given below:-
(A) 1s^2 2s^1
(B) 1s^2 2s^2 2p^3
(C) 1s^2 2s^2 2p^5
(D) 1s^2 2s^2 2p^6 3s^1
In which of these electronic configuration would you expect to have highest
(i) IE 1
(ii) IE 2
options:-
(1) C. A
(2) B. A
(3) C, B
(4) B. D ​

Answer 1

The electronic configuration for some neutral atoms are given below. A: 1s22s2, B: 1s22s22p3. C: 1s22s22p4, D: ... Because after the removal of one electron, D will acquire a configuration of a noble gas and thus its IE2 will be the highest