Which configuration is possible in an excited state of electron

An excited state means that (typically) the valence electron has moved from its ground state orbital (i.e. lowest available energy) to some other higher energy orbital.

So any electron configuration in which the last electron (again, the valence electron) is in a higher energy orbital, this element is said to be in an excited state.

After the '2p state' would be a '3s state'. If an electron from 2p orbital becomes excited, it would jump to the next orbital, that is, 3s.

Explanation:

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After the '2p state' would be a '3s state'. If an electron from 2p orbital becomes excited, it would jump to the next orbital, that is, 3s. Therefore, the answer here is D.

An excited state means that (typically) the valence electron has moved from its ground state orbital (i.e. lowest available energy) to some other higher energy orbital.

Explanation:

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B. 1H:1D1

Explanation:

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Explanation:

So any electron configuration in which the last electron (again, the valence electron) is in a higher energy orbital, this element is said to be in an excited state. For example, if we look at the ground state (electrons in the energetically lowest available orbital) of oxygen, the electron configuration is 1s22s22p4 .

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