Difference between revisions of "Erbium"
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| − | '''Erbium''' is a chemical element in the lanthanide series, with symbol Er and atomic number 68. | + | '''Erbium''' is a chemical element in the lanthanide series, with symbol '''Er''' and atomic number 68. |
==Properties== | ==Properties== | ||
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Revision as of 17:18, 7 August 2017
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Erbium is a chemical element in the lanthanide series, with symbol Er and atomic number 68.
Contents
Properties
Chemical
Erbium metal tarnishes slowly in air and burns readily to form erbium(III) oxide:
- 4 Er + 3 O2 → 2 Er2O3
Erbium will slowly react with cold water, but the reaction occurs much faster in hot water.
Physical
Erbium is a silvery-white malleable metal. It is stable in air, and does not oxidize as quickly as some other rare-earth metals. Erbium is ferromagnetic below 19 K, antiferromagnetic between 19 and 80 K and paramagnetic above 80 K.
Availability
Erbium can be purchased online. Metallium sells erbium coins.
Preparation
Erbium can be prepared by reducing its oxide or salts with calcium at 1450 °C under argon atmosphere.
- Er2O3 + 3 Ca → 2 Er + 3 CaO
Projects
- Erbium chloride
- Erbium glass
Handling
Safety
Erbium's toxicity is similar to that of other lanthanides.
Storage
In closed bottles, away from moisture and corrosives vapors.
Disposal
Best to try to recycle it.
