Question

Which of the following options does not represent ground state
electronic configuration of an atom?
(i) 1s2 2s2 2p

6 3s2 3p6 3d8 4s2
(ii) 1s2 2s2 2p6 3s2 3p6 3d9 4s2
(iii) 1s2 2s2 2p6 3s2 3p6 3d10 4s1
(iv) 1s2 2s2 2p6 3s2 3p6 3d5 4s1
(a) (i) & (ii) (b) (ii) & (iii) (c) (iii)& (iv) (d) (iii) & (i)

Answer 1

Answer:

d ans

Explanation:

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