`Ln^(3+)` (trivalent lanthanides ions ) have electronic configuration.

Options

A. `[Xe]4f "to" [Xe]4f^(14)`
B. `[Xe]4d^(1)4f"to"[Xe]4d^(1)4f^(14)`
C. `[Xe]4d^(2)4f^(0)"to"[Xe]4d^(1)4f^(14)`
D. `[Xe]4f^(0)"to"[Xe]4f^(14)`

Answer

A

Explanation

`[Xe]4f^(1)to[Xe]4f^(14)`