Which of the following configuration is/are correct in the first excited state ?
Chemistry · JEE Advanced · NTA Exams — Atomic Structure
Which of the following configuration is/are correct in the first excited state ?
- cr [Ar] 3d5 4s1
- Fe2+ [Ar] 3d5 4s1
- Mn2+ [Ar] 4s0 3d5
- Co3+ [Ar] 3d5 4s1
Answer
(B) Fe 2+ [Ar] 3d 5 4s 1, (D) Co 3+ [Ar] 3d 5 4s 1
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