The electronic configuration of Fe³⁺ is:
Correct answer: C. [Ar]3d⁵4s⁰
- A. [Ar]3d⁵4s¹
- B. [Ar]3d⁶4s⁰
- C. [Ar]3d⁵4s⁰
- D. [Ar]3d⁶4s²
Explanation
The configuration of a neutral Fe atom is [Ar]3d⁶4s². To form the Fe³⁺ ion, it loses three electrons. The two 4s electrons are lost first, followed by one 3d electron, resulting in the configuration [Ar]3d⁵4s⁰
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