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Which of the following represent an excited state of an atom?

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[Ne] 3s²3p⁶ 3d⁵4s¹

1s² 2s² 2p⁵ 3s¹

[Ne] 3s²3p⁶ 3d⁸ 4s²

[Ne] 3s²3p⁶3d¹ 4s²

answer is D.

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Detailed Solution

1S²2S²2P⁵3S¹is the excited state electronic configuration of atom

1S²2S²2P⁶ is the ground state electronic configuration of Ne

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