Halogens react with heated iron wool to form iron(III) halides.
Table 1 shows the observations of the reactions of some halogens with heated iron wool.
Astatine is a halogen located directly below iodine in Group 7.
Use Table 1 to predict the vigor of the reaction between astatine and heated iron wool. Table 1
| Halogen | Observation of reaction with heated iron wool |
|---|---|
| Chlorine | Reacts very vigorously with a bright orange glow |
| Bromine | Reacts moderately with a dull red glow |
| Iodine | Reacts slowly with a faint glow only when heated constantly |
| Astatine |
106 exam-style questions on Edexcel GCSE Chemistry 7.2 Group 7, covering 7.2.1 Physical properties of the halogens, 7.2.2 Reactions of the halogens, 7.2.3 Relative reactivity and displacement reactions of the halogens, and 7.2.4 Halogen displacement as a redox reaction. Each one has a worked solution and a mark scheme showing where the marks go.