Question:
Electronic configurations of four elements A, B, C and D are given below :
(A) 1s2 2s2 2p6
(B) 1s2 2s2 2p4
(C) 1s2 2s2 2p6 3s1
(D) 1s2 2s2 2p5
Which of the following is the correct order of increasing tendency to gain
electron :
(i) A < C < B < D
(ii) A < B < C < D
(iii) D < B < C < A
(iv) D < A < B < C
Solution:
Option (i) is the answer.
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