Write electronic configuration for $C u, {C u}^{2 +}, {Z n}^{2 +}, {C r}^{3 +}$ .

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Solution

Electronic configuration for:
$_{29} C u ⟶ 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1} 3 d^{10}$
$C u^{2 +} ⟶ 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{0} 3 d^{9}$
$_{(30)} Z n^{2 +} ⟶ 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{0} 3 d^{10}$
$_{(24)} C r^{3 +} ⟶ 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{0} 3 d^{3}$

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