Question

why is the electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^4 is not correct for chromium .what will be the correct configration

Answer 1

$1 {s}^{2} \: 2 {s}^{2} \: 2 {p}^{6} \: 3 {s}^{2} \: 3 {p}^{6} \: 3 {d}^{5} \: 4 {s}^{1}$

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