Question
Write down the electronic configuration of: $Pm^{3+}$
✓
Answer
$Pm^{3+}: 1s^2 \ 2s^{2} \ 2p^{6} \ 3s^{2} \ 3p^{6} \ 3d^{10} \ 4s^2 \ 4p^6 \ 4d^{10} \ 5s^{2 } \ 5p^6 \ 4f^4$
Or, $[Xe]^{54} \ 3d^3$
Or, $[Xe]^{54} \ 3d^3$
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