The physical states and colours of some Group 7 elements (halogens) at room temperature (20∘C20^\circ\text{C}20∘C) are shown in the table.
| Halogen | State at room temperature | Colour |
|---|---|---|
| Fluorine | Gas | Pale yellow |
| Chlorine | Gas | Green-yellow |
| Bromine | Liquid | Red-brown |
| Iodine | Solid | Grey-black |
| Astatine | Solid | Black |
Tennessine (Ts\text{Ts}Ts) is the element directly below astatine in Group 7.
Predict the physical state and colour of tennessine 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.