Weird Electron configurations

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11 Terms

1
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Sc (normal but to show why others are weird)

[Ar]4s2 3d1 (4s before 3d)

2
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V (normal but to show why others are weird)

[Ar]4s2 3d3

3
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Cr (not normal)

[Ar]4s1 3d5

(doesnt follow aufbau law) (expected would be 4s2 3d4)

4
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Cr2+

[Ar]4s0 3d4 (takes from 4s first)

5
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Cr3+

[Ar]4s0 3d3 (takes from 4s first)

6
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Fe (normal but to show why others are weird)

[Ar]4s2 3d6

7
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Fe2+ (weird)

[Ar]3d6 (takes from 4s first)

8
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Fe3+ (weird)

[Ar]3d5 (takes from 4s first)

9
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Cu

[Ar]4s1 3d10 (expected would be 4s2 3d9)

10
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Cu+

[Ar]4s0 3d10

11
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Cu2+

[Ar]4s0 3d9