A-LevelChemistryChemical periodicityOct/Nov 2025Paper 1 Q231 Mark
Element E is in Period 3. It forms a chloride which reacts with a small amount of water to produce a white precipitate and steamy fumes. This precipitate is soluble in NaOH(aq) and in HCl(aq). What is element E?
Amagnesium
Baluminium
Csilicon
Dphosphorus
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The correct answer is B. This question tests the candidate's understanding of chemical periodicity within the Chemistrysyllabus. The examiner's mark scheme requires...
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