Question

4s orbital is lower in energy than 3d orbital explain​

Answer 1

Answer:

because 4S is the outer orbit of 3D orbital

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Answer 2

4s orbital is lower in energy than 3d orbital explain

Explanation:

In the electronic configuration of transition metal we first fill 4s-orbital since the energy of 4s-orbital is less than the 3d-orbital due to screening of nucleus charges. But when the 3d-orbital is filled up with electron after having been filled up 4s-orbital, the energy of 3d orbital is found to be reduced

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