The ground-state electron configuration for an element is \text{[Ar]}3d^74s^2[Ar]3d
7
4s
2
start text, open bracket, A, r, close bracket, end text, 3, d, start superscript, 7, end superscript, 4, s, squared
You may also see this electron configuration written as
\text{[Ar]}4s^23d^7[Ar]4s
2
3d
7
start text, open bracket, A, r, close bracket, end text, 4, s, squared, 3, d, start superscript, 7, end superscript
Which of the following is the identity of the element?