The questions in this quiz are suitable for GCSE physics students studying structure of the atom, atoms and isotopes and ions. If you struggled with the quiz, don't panic - we've got you!

Isotopes are forms of a chemical element with specific properties. You can see the different chemical elements on the periodic table. Each element is distinguished by the number of protons, neutrons ...

The new heavyweights are isotopes of the metals thulium, ytterbium and lutetium. Isotopes are versions of atoms with irregular numbers of neutrons in the nuclei. In this case, researchers packed ...

ONE of the most remarkable characteristics of atoms is their predilection for the number 2 or for even numbers. The nuclei of atoms are now considered to be built up from hydrogen nuclei ...