A-LevelChemistryGroup 17May/June 2022Paper 1 Q221 Mark
X, Y and Z are three elements in Group 17. X₂ has weaker covalent bonds than Y₂. X₂ has stronger instantaneous dipole-induced dipole forces between its molecules than Z₂. Y₂ is a stronger oxidising agent than Z₂. What could be X, Y and Z?
ABr, Cl, I
BCl, Br, I
CI, Br, Cl
DI, Cl, Br
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of group 17 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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