The atomic number of cerium `(Ce)` is 58. The correct electronic confguration of `Ce^(3+)` ions is :

Options

A. `[Xe]4f^1`
B. `[Kr]4f^1`
C. `[Xe]4f^13`
D. `[Kr]4d^1`

Answer

A

Explanation

The correct electronic configuration of Ce is `[54]4f^1 5d^1 6s^2`
`:. Ce^(3+)" is " [54] 4f^1 i.e., [Xe]4f^1`.