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, which may be ...

This clip shows how carbon is made up from sub-atomic particles. Electron shells are mentioned. Two extra neutrons are added to make an unstable isotope which explodes at the end. This clip could be ...

This clip shows how carbon is made up from sub-atomic particles. Electron shells are mentioned. Two extra neutrons are added to make an unstable isotope which explodes at the end. This clip could then ...