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.
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.