Chemistry, 28.01.2020 20:01 kayla232734

Which electron configuration represents an atom in an excited state?
(1) 2–7 (3) 2–8–1
(2) 2–6–2 (4) 2–8–8–2

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Which electron configuration represents an atom in an excited state?
(1) 2–7 (3) 2–8–1
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