A-LevelChemistryChemical periodicityFeb/Mar 2020Paper 1 Q161 Mark
Sodium, magnesium and aluminium are three elements in Period 3 of the Periodic Table. Each element forms an oxide. Which row is correct?
Asodium oxide: basic, magnesium oxide: amphoteric, aluminium oxide: amphoteric
Bsodium oxide: giant ionic, magnesium oxide: giant ionic, aluminium oxide: simple molecular
Csodium oxide: high melting point, magnesium oxide: high melting point, aluminium oxide: low melting point
Dsodium oxide: readily reacts with water, magnesium oxide: slight reaction with water, aluminium oxide: no reaction with water
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of chemical periodicity within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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