Particles found in the nuclei of atoms, which have a similar mass to a proton but no electric charge.
Particles found in the nuclei of atoms, which have a similar mass to a proton, but no electric charge. Atoms of the same element can contain different numbers of neutrons. These different versions, which are still of the same element, are called isotopes.
Atoms of the same element can contain different numbers of neutrons. These different versions, which are still of the same element, are called isotopes.