A student looks up some data about the noble gases.
The table shows the data. The densities are at room temperature and pressure.
| Noble gas | Atomic number | Boiling point in °C | Density in g dm−3\mathrm{g\,dm^{-3}}gdm−3 |
|---|---|---|---|
| helium | 2 | −269 | 0.167 |
| neon | 10 | −246 | 0.833 |
| argon | 18 | −186 | 1.67 |
| krypton | 36 | −153 | 3.50 |
| xenon | 54 | −108 | 5.46 |
| radon | 86 | ? | 9.25 |
Describe the trend in boiling points going down the group.
Name the noble gas in the table with the lowest density.
Predict the boiling point of radon.
State the physical state of radon at 20 °C. Give a reason for your answer.
The density of air is 1.20 g dm−3\mathrm{g\,dm^{-3}}gdm−3. Name the two noble gases in the table that are less dense than air.
38 exam-style questions on Edexcel GCSE Chemistry 7.3 Group 0, covering 7.3.1 The noble gases. Each one has a worked solution and a mark scheme showing where the marks go.