alleryWhy do noble gases like helium, neon and argon not take part in chemical reactions?
AThey readily lose all electrons
BTheir outermost shell is empty
CTheir outermost shell is complete
DThey readily gain extra electrons
Answer & Solution
Correct answer: C. Their outermost shell is complete
1. The driving force of reactions is to attain a complete octet like the nearest noble gas.
2. Noble gases already have a complete outermost shell.
3. With a full octet they have no tendency to gain or lose electrons.
4. Hence they are chemically inert; an empty shell would not explain inertness.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.106_
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