Question
Write down the electronic configuration of: $CO^{2+}$
✓
Answer
$CO^{2+}: 1s^2 \ 2s^2 \ 2p^{6} \ 3s^{2} \ 3p^{6} \ 3d^7$
Or, $[Ar]^{18}d^7$
Or, $[Ar]^{18}d^7$
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