IGCSE Chemistry Edexcel (4CH1)

2: (b) Group 7 (halogens) chlorine, bromine and iodine

#2.5
#2.6
#2.7
#2.8C
Explain trend in reactivity in Group 7
2
(a) Group 1 (alkali metals) lithium, sodium and potassium
2
(c) Gases in the atmosphere
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