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.
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.