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The configuration $1 s^{2} 2 s^{2} 2 p^{5} 3 s^{1}$ shows

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Ground state of fluorine

Excited state of fluorine

Exited state of neon atom

Excited state of argon.

answer is C.

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Detailed Solution

Atomic number of the given element =10
Electronic configuration =1s²,2s²_²p⁶
1s²2s²2p⁶ is electronic configuration of Ne.
1s²2s²2p⁵3s¹ is excited oxidation state.

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