Card 1 of 22
How does a halogen atom form a halide ion?
A
Bromine is more reactive than iodine.
B
It gains one electron.
C
Iodine is less reactive than chlorine.
D
Chlorine displaces iodine:
Cl2+2KI→2KCl+I2 \boxed{\text{Cl}_2 + 2\text{KI} \rightarrow 2\text{KCl} + \text{I}_2} Cl2+2KI→2KCl+I2Card 1 of 22
7.2.3 Relative reactivity and displacement reactions of the halogens Flashcards
22 flashcards on Edexcel GCSE Chemistry 7.2.3 Relative reactivity and displacement reactions of the halogens: the key terms, definitions and equations you need to recall for Paper 1 and Paper 2.