A-LevelChemistryChemical bondingFeb/Mar 2022Paper 1 Q71 Mark
Elements X, Y and Z are all in the first two periods of the Periodic Table. Their Pauling electronegativity values, EN, are shown. [Figure 7.1] Substances exist with formulae XZ, YZ and Z₂. Which row puts these substances in order of increasing melting point? [Figure 7.2]
AXZ, YZ, Z₂
BXZ, Z₂, YZ
CZ₂, YZ, XZ
DZ₂, XZ, YZ
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of chemical bonding 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep