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 |
Practise Edexcel GCSE Chemistry Group 7 with exam-style questions for Foundation and Higher tier. 87 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.