Which of the Following Ions Have an [Ar]3d⁵ Electron Configuration

question 59

Multiple Choice

Which of the following ions have an [Ar]3d⁵ electron configuration: Co²⁺,Mn²⁺,and Fe³⁺?

• A) Co²⁺ only
• B) Mn²⁺ only
• C) Fe³⁺ only
• D) Co²⁺ and Fe³⁺
• E) Mn²⁺ and Fe³⁺

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