noun🔗ShareProtonesA positively charged subatomic particle forming part of the nucleus of an atom and determining the atomic number of an element, composed of two up quarks and a down quark."The number of protons in an atom's nucleus defines what element it is. "El número de protones en el núcleo de un átomo define qué elemento es.physicschemistryelementscienceenergysubstancestructuretechnicalcompoundChat with AIVocabulary GamePractice Reading
