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

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Solution

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. Both Helium and Neon are inert gases.

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

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