The average fraction of atoms of a given isotope of an element on Earth. 1. having no net electrical charge. An elementary particle found the atomic nucleus of all stable atoms except the hydrogen-1 atom. Neutrons have no charge and have a mass of 1.008665 daltons . A nonmetal is a substance that conducts heat and electricity poorly, is brittle or waxy or gaseous, and cannot be hammered into sheets or drawn into wire.
Nonmetals gain electrons easily to form anions .
Energy needed to break an atomic nucleus into separate protons and neutrons. Compare with proton , neutron and atomic nucleus . A proton or a neutron in the atomic nucleus . Compare with atomic nucleus , nuclide and element symbol . A symbol for an nuclide that contains the mass number as a leading superscript and the atomic number as a leading subscript.