Gareth56 Posted October 16, 2012 Share Posted October 16, 2012 Just started to read my "old" chemistry textbook and it said the following:- "Both protons and neutrons are particles with unit mass, but a proton has one positive charge and a neutron is electrically neutral." Can I just ask what's the meaning of 'Unit Mass' in this context? Thanks. Link to comment Share on other sites More sharing options...
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