Holmium(III) oxide
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Holmium oxide, or holmium oxide is a chemical compound of the rare-earth element holmium and oxygen with the formula Ho2O3. Together with dysprosium oxide, holmium oxide is one of the most powerfully
Samples of holmium(III) oxide under ambient light, and trichromatic light
Room-temperature structure of Ho2O3 viewed along a cubic axis. Red atoms are oxygens
Gadolinite contains traces of holmium(III) oxide
Lanthanide
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A lanthanide is any of the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. In the periodic table, the first fourteen fill the 4f orbitals. Lutetium is also of
Holmium(III) oxide
…known. The oxide, also called holmia, occurs as a component of the related erbium oxide mineral called erbia. Typically, the oxides of the trivalent lanthanides coexist in nature, and separation of these components requires specialized methods. Holmium oxide is used in making specialty colored glasses. Glass…
Lanthanide oxides: clockwise from top center: praseodymium, cerium, lanthanum, neodymium, samarium and gadolinium
Samples of lanthanide elements (excluding promethium)