Elements containing four, five, six, or seven electrons in their outermost shell are classified as nonmetals. Metals in the Periodic Table Metals make up the vast bulk of elements on the periodic table. This periodic chart categorizes elements as metal, non-metal, and metalloid. The metals ...
It is a lustrous, hard-brittle, grayish-white metalloid in the carbon group, chemically similar to its group neighbors silicon and tin. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Like silicon, germanium naturally reacts and forms complexes with oxygen in ...