O-LevelChemistryAtomic Structure5070/11 · Oct/Nov 2021 · Q291 Mark
Which statement about the properties of the elements in Group VIII of the Periodic Table, helium to xenon, is correct?
AArgon reacts with iron to form a compound.
BHelium is less dense than air.
CThe elements change from gas to solid down the group.
DThe elements exist as covalent molecules.
✓ Correct answer
B: Helium is less dense than air.
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