noun Descargar 🔗Compartir Neutrones A subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks. Examples : "The nucleus of a helium atom contains two protons and two neutrons. " El núcleo de un átomo de helio contiene dos protones y dos neutrones. physics element part science chemistry energy mass Chat con IAJuego de vocabularioPracticar lectura