<p align="right">Last Update: <font color="#4f81bd">November 25, 2024</font></p> ### BIG IDEAS - Fundamental components of matter. - A positive electric charge (+1). - Found in the nucleus of an atom. - The number of protons determines the identity of an atom (atomic number, $Z$). - Composed of [[Quarks]]. - Mostly stable ### Related Topics --- [[Home|Home]] | [[Quantum mechanics]] | [[Notes Vault/Physics Notes Vault/Quantity of Motion/Quantum Mechanics/Blackbody Radiation|Blackbody Radiation]] | [[Photoelectric Effect]] | [[Atomic Theory]] | [[Atom]] | [[Early Models of the Atom]] | [[Bohr Model]] | [[Electrons]] | [[Nucleons]]