Erbium
Erbium (pronounced /ˈɝbiəm/) is an element on the periodic table. Its symbol is Er. Its atomic number is 68 which means it has 68 protons in an atom. It is a lanthanide and, along with yttrium, terbium, and ytterbium, is one of the four elements to be named after the town of Ytterby in Sweden, all of which are rare earth elements.
Erbium Media
Erbium(III) chloride in sunlight, showing some pink fluorescence of Er+3 from natural ultraviolet.
Erbium(III) oxide (Erbia) Powder Sample
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Erbium(III) chloride hydrate
Carl Gustaf Mosander, the scientist who discovered erbium, lanthanum and terbium.
- Erbiumglass
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