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Helium is an Unreactive Gas and Neon is a Gas of Extremely Low Reactivity. What, If Anything, Do Their Atoms Have in Common? - Science

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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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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.

Concept: Mendeleev’s Periodic Table
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APPEARS IN

NCERT Class 10 Science
Chapter 5 Periodic Classification of Elements
Q 4.2 | Page 90
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