Trends in properties of the halogens Quiz
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5 questions, one answer each
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1. Which halogen has the highest electronegativity?
- A. Chlorine
- B. Fluorine
- C. Bromine
- D. Iodine
2. Why is the boiling point of bromine higher than that of chlorine?
- A. Br–Br bonds are stronger than Cl–Cl bonds
- B. Bromine molecules have more electrons so stronger London forces
- C. Bromine molecules are polar
- D. Bromine atoms have a higher nuclear charge so form ions
3. Chlorine water is added to potassium iodide solution. What is observed?
- A. No change
- B. A white precipitate
- C. The solution turns brown
- D. The solution turns green
4. Which mixture shows no reaction?
- A. Cl₂ with Br⁻
- B. Br₂ with I⁻
- C. Cl₂ with I⁻
- D. I₂ with Br⁻
5. Which explains why bromine is a weaker oxidising agent than chlorine?
- A. Bromine has fewer electrons
- B. Bromine has a lower nuclear charge
- C. Bromine molecules have weaker London forces
- D. Bromine atoms are larger with more shielding, so attract an electron less strongly