Chemistryhard · Past Paper
The element with the configuration $1s^2 2s^2 2p^6 3s^2 3p^6$ is an:
AAlkali metal
BHalogen
CInert gas
DAlkaline earth metal
✓ Correct Answer: C — Inert gas
The configuration corresponds to Argon (At. No. 18), which is an inert gas with a full octet.
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