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Why is germanium a pure semiconductor?
The outermost orbit of Germanium consists of four electrons. The Germanium atom uses these atoms to form covalent bonds. The arrangement of electrons is such that they are very stable and do not act as a conductor efficiently. Intrinsic semiconductor: It is the purest form of semiconductor.
Is germanium a Ametalloid?
Most elements are either metals or nonmetals. Germanium falls in the same group as carbon and silicon, but also as tin and lead. Germanium itself is classified as a metalloid.
How many electrons does GE 4+ have?
32 electrons
Germanium Atomic and Orbital Properties Germanium atoms have 32 electrons and the electronic shell structure is [2, 8, 18, 4] with Atomic Term Symbol (Quantum Numbers) 3P0.
Is germanium a soft metal?
Germanium is a hard, brittle, silvery-white (Fig. 1) semi-metal, having some properties of both metal and nonmetallic elements. Sandwiched between silicon and tin on the periodic table, germanium is a semiconductor like silicon.
What are the physical properties of germanium?
Properties: Germanium has a melting point of 937.4°C, boiling point of 2830°C, specific gravity of 5.323 (25° C), with valences of 2 and 4. In pure form, the element is a grayish white metalloid. It is crystalline and brittle and retains its luster in air. The dioxide is reduced with hydrogen to give the element.
Who predicted the existence of germanium?
The existence of germanium was predicted by Russian chemist Dmitri Mendeleev (1834-1907), who developed the periodic table. Mendeleev predicted a new element would be found to fill an empty spot on the table. He was proved correct in 1886. Until the 1950s, there were no important uses for germanium.
What is GE face centered diamond-cubic germanium?
face-centered diamond-cubic Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard-brittle, grayish-white metalloid in the carbon group, chemically similar to its group neighbors silicon and tin.
Where does germanium rank on the periodic table?
Germanium ranks near fiftieth in relative abundance of the elements in the Earth’s crust. In 1869, Dmitri Mendeleev predicted its existence and some of its properties from its position on his periodic table, and called the element ekasilicon.