The table below shows some physical properties of the first four halogens in Group 7.
| Halogen | Colour | Melting point (∘C^\circ\text{C}∘C) |
|---|---|---|
| Fluorine | Pale yellow | -220 |
| Chlorine | Pale green | -101 |
| Bromine | Red-brown | -7 |
| Iodine | Dark grey | 114 |
Astatine is located directly below iodine in Group 7.
Predict the colour of astatine and estimate its melting point.
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.