Electronic configuration of four elements p,q,r and s are given below
(p) `1s^(2)2s^(2)2p^(6)` (q) `1s^(2)2s^(2)2p^(4)`
(r) `1s^(2)2s^(2)3s^(1)` (s) `1s^(2)2s^(2)2p^(5)`
Correct order of increasing tendency of gain electron is
A. `A lt C lt B lt D`
B. `A lt B lt C lt D`
C. `D lt B lt C lt A`
D. `D lt A lt B lt C`
