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The  electronic configuration of 1s2 2s2 2p5 3sshows

(a)  ground state fluorine atom

(b)  excited state oi fluorine atom

(c) excited state of neon atom

(d) excited state of O-2 ion. 

1 Answer

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Best answer

Correct option (c) excited state of neon atom

Explanation:

The ground state electronic configuration of neon atom (Z  = 10) is

1s2,2s2, 2p6

Therefore, first excited state of neon will be

1s2, 2s2, 2p5, 3s1 

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