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Why do 4s orbitals have lower energy than 3d orbitals?

Why do 4s orbitals have lower energy than 3d orbitals?

Grade:12th pass

1 Answers

Jayesh Vashishtha
askIITians Faculty 1450 Points
11 months ago
Dear student,

4s-orbital penetrates more into the nucleus than 3d-orbital
Penetrating effect of orbitals os as follows
s > p > d > F
thereby, by (n +l) rule 4s have lower energy than 3d.

regards,
Team Askiitian

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