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Question
Write observed electronic configuration of elements from first transition series having half
filled d-orbitals.
Solution
| Elements | Symbols | Atomic Number |
Expected Electronic Configuration |
Observed Electronic Configuration |
| Chromium | Cr | 24 | [Ar] 3d4 4s2 | [Ar] 3d5 4s1 |
| Manganese | Mn | 25 | [Ar] 3d5 4s2 | [Ar] 3d5 4s2 |
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