The table below shows the melting points of some Group 7 elements (the halogens).
Table 1
| Element | Atomic number | Melting point in °C |
|---|---|---|
| Chlorine | 17 | -101 |
| Bromine | 35 | -7 |
| Iodine | 53 | 114 |
Describe the trend in the melting points of the elements shown in Table 1 as the atomic number increases.
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.