Tellurium

Metalloid

Atomic Number: 52 • Atomic Mass: 127.6000 u • Period: 5 • Group: 16

Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁴

Phase: Solid

Electronegativity: 2.1

History

Tellurium has been known since ancient times

Discovered in gold ores from Transylvania

Identified as a new element by Franz-Joseph Müller von Reichenstein

Named by Martin Heinrich Klaproth who isolated it in 1798