Erbium

Erbium is a chemical element in the lanthanide series, with symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements on Earth. As such, it is a rare earth element which is associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden, where yttrium, ytterbium, and terbium were discovered.

Properties

• Phase: Solid
• Density: 9.066 g/cm³
• Melting Point: 1802 K
• Boiling Point: 3141 K

Uses