Table 1 shows the melting points of some Group 1 elements in the periodic table.
Table 1
| Element | Melting point in ∘C^\circ\text{C}∘C |
|---|---|
| Lithium | 181 |
| Sodium | 98 |
| Potassium | 63 |
| Rubidium | |
| Caesium | 29 |
Use the information in Table 1 to suggest a value for the melting point of rubidium.
75 exam-style questions on Edexcel GCSE Chemistry 7.1 Group 1, covering 7.1.1 Classifying elements by group in the periodic table and 7.1.2 Properties and reactions of the alkali metals. Each one has a worked solution and a mark scheme showing where the marks go.