A-LevelChemistryChemical periodicityFeb/Mar 2022Paper 1 Q181 Mark
The elements in Period 3 and their compounds show trends across the period from sodium to chlorine. Which row is correct? [Figure 18.1]
Adecreases, basic → amphoteric → acidic
Bdecreases, acidic → amphoteric → basic
Cincreases, basic → amphoteric → acidic
Dincreases, acidic → amphoteric → basic
✓ Correct Answer
The correct answer is C. 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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