Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content A focus BDD for the AtomicNucleus block Source Wikipedia Copyright information Text from Wikipedia and Wiktionary web pages quoted for educational purposes is subject to the Wikipedia Creative Commons Attribution ShareAlike Licence Snippet kind INFO Previous snippet Full quote The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. URL https://en.wikipedia.org/wiki/Atomic_number Next snippet Related snippets Related snippets (backlinks) Visit also Visit also (backlinks) Flags