A very important part of chemistry is understanding the structure ... the atom (less than 1 × \(10^{-14}\) m) For comparison, the radius of a typical human hair is about 1 × \(10^{-4}\) ...

Atomic structure - AQA Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The number of subatomic particles in an atom can be calculated from the atom's ...