CAIE A Level Chemistry 9701 · Group 17
Fluorine and iodine are halogens at opposite ends of Group 17.
Compare the reactivity of fluorine and iodine as oxidising agents, their reactions with hydrogen, and the thermal stability of the hydrogen halides formed.
Use the following bond dissociation energies in your answer:
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.