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Assertion: The energy of electron in 2s ...

Assertion: The energy of electron in `2s` orbital of `He^(+)` is more than that of `Li^(2+)`. Reason , The energy of an electron in an orbital decreases with increase in atomic number.

A

Assertion is correct , reason is correct and reason is the correct explanation for assertion

B

Assertion is correct , reason is correct and reason is not correct explanation for assertion

C

Assertion is correct and reason is incorrect

D

Assertion is incorrect and reason is correct

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