The table below shows some physical properties of the first four halogens in Group 7.
| Halogen | Colour | State at room temperature (20∘C20^\circ\text{C}20∘C) |
|---|---|---|
| Fluorine | Pale yellow | Gas |
| Chlorine | Pale green | Gas |
| Bromine | Red-brown | Liquid |
| Iodine | Dark grey | Solid |
Astatine is located directly below iodine in Group 7.
Predict the colour and state of astatine at room temperature.
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.