A-LevelChemistryGroup 17May/June 2016Paper 1 Q191 Mark
Fluorine and iodine are Group 17 elements. Their melting points are different due to differing strengths of van der Waals' forces between molecules. Which row is correct? melting point strength of van der Waals' forces between molecules F₂ > I₂ F₂ > I₂ F₂ > I₂ F₂ < I₂ F₂ < I₂ F₂ < I₂ F₂ < I₂ F₂ > I₂
AF₂ > I₂ F₂ > I₂
BF₂ > I₂ F₂ < I₂
CF₂ < I₂ F₂ < I₂
DF₂ < I₂ F₂ > I₂
✓ Correct Answer
The correct answer is C. 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...
🔒
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