The electronic configuration of `Gd^(2+)` is (at.no.Gd is 64)

Options

A. `[Xe]4f^7 5d^1`
B. `[Xe] 4f^7 5 d^1 6s^2`
C. `[Xe]4f^7`
D. `[Xe]4f^8`

Answer

A

Explanation

`[Xe]4f^7 5 d^1`