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Proton - Wikipedia
What Is a Proton? Definition and Properties
Proton | Definition, Mass, Charge, & Facts | Britannica
2.6: Protons, Neutrons, and Electrons in Atoms - Chemistry ...
Proton: Definition, Characteristics, & Location with Example
4.4: Protons, Neutrons, and Electrons - Chemistry LibreTexts
DOE Explains...Protons - Department of Energy