Name the noble gas that has the highest volume composition in air.
State one practical use of helium.
Radon is very unreactive. Explain this using the electronic structure of radon.
Two isotopes of radon are shown, $^{220}_{86}\text{Rn}$ and $^{222}_{86}\text{Rn}$. Give one similarity in the atomic structure of these two isotopes.
Give one way in which the atomic structure of these two isotopes is different.
Xenon forms a compound made only of xenon, oxygen and fluorine. The compound is 22.1% oxygen by mass and 17.5% fluorine by mass. Calculate the empirical formula of this compound.
A neon sample has a volume of $21\,\text{dm}^3$ at room temperature and pressure. Its temperature is raised while the pressure stays constant. Describe and explain, using kinetic particle theory, the change in the sample’s volume.
The pressure of the sample is increased while the temperature remains constant. Describe and explain, using kinetic particle theory, what happens to the volume of the sample.
Calculate the mass of neon in the $21\,\text{dm}^3$ sample, and give your answer to two significant figures.