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Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything,

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asked Dec 8, 2021 in Periodic Classification of Elements by Doubtly (98.9k points)
edited Jun 29, 2023

Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?

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1 Answer

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answered Dec 8, 2021 by Doubtly (98.9k points)
selected Jun 29, 2023 by Doubtly

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Both helium (He) and neon (Ne) have filled outermost shells. Helium has a duplet in its K shell, while neon has an octet in its L shell.

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