Chemistry · Oct / Nov 2024 · Paper 12 · Question 26
5070Noble gases
Which statement explains why helium and neon are unreactive?
- AThey are both gases at room temperature and pressure.
- BThey both have eight electrons in their outer shell.
- CThey both have equal numbers of protons and electrons in their atoms.
- DThey both have all their occupied electron shells completely filled.
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Correct answer: D. They both have all their occupied electron shells completely filled.
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