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Question

State True or False.
4s orbital has less than energy than 3d orbital

A
True
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B
False
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Solution

The correct option is A True
The energy in an orbital is given by n+l rule,
4s 4+0 = 4
3d 3+2 = 5
The n+l value for a 4s orbital is lesser than the 3d orbital and hence the 4s has lesser energy.

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