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| style="height:20px; width:150px; text-align:center;"|'''Rest Mass / kg'''
| style="height:20px; width:150px; text-align:center;"|[[Unified Atomic Mass Units]]
| style="height:20px; width:150px; text-align:center;"|[[Rest Energy ]] / MeV
|-
| style="height:20px; width:150px; text-align:center;"|[[Proton]] (<math>p</math>)