Revision as of 17:26, 29 November 2012 by 120223152(talk | contribs)(Created page with " A neutron is a subatomic particle. It has no charge and its mass is approximately equal to that of a proton (1.67×10<sup>−27</sup> kg). The number of neu...")
A neutron is a subatomic particle. It has no charge and its mass is approximately equal to that of a proton (1.67×10−27 kg). The number of neutrons that an atom possesses determines neutron number and thus its isotope.