This article was originally published with the title “ The Size and Shape of Atomic Nuclei ” in Scientific American Magazine Vol. 221 No. 2 (August 1969), p. 58 doi:10.1038 ...

They have a radius of around 1 × 10 10 metres ... is the splitting of a large atomic nucleus into smaller nuclei. The fast-moving neutrons carry most of the energy from the reaction with them ...

The radius of an atom is 1 × 10-10 m. The radius of the nucleus of this atom is 1 × 10-14 m. Calculate how many times smaller the radius of the nucleus is than the radius of the atom.