Nonmetal
Elements on the periodic table can be classified as metal, semimetal, or non-metal. Five times more elements are metals than nonmetals. However, nonmetals are abundant and important.  Two of the nonmetals—hydrogen and helium—make up over 99 per cent of the observable Universe, and one—oxygen—makes up close to half of the Earth's crust, oceans and atmosphere. Living organisms are also composed almost entirely of nonmetals, and nonmetals form many more compounds than metals.