O-LevelChemistryMetals & Reactivity5070/11 · May/June 2011 · Q221 Mark
Which deduction about the element astatine, At, can be made from its position in Group VII?
AIt forms covalent compounds with sodium.
BIt is a gas.
CIt is displaced from aqueous potassium astatide, KAt, by chlorine.
DIt is more reactive than iodine.
✓ Correct answer
C: It is displaced from aqueous potassium astatide, KAt, by chlorine.
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