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yttrium [Y]
From Ytterby, Sweden, a source of many unusual minerals. Discovered in 1789 by Finnish chemist Yohann Gadolin.
Occurrence:
-> found with other rare-earth elements combined in the form of minerals
Characteristics:
1) metallic element usually included among the rare-earth metals which it resembles chemically
2) stable in air
3) very reactive with halogens
4) mildly toxic when ingested
Uses:
1) X-ray filters
2) superconductors
3) yttrium oxide is combined with europium to give the red phosphor in color television tubes
4) yttrium-aluminum-garnet laser (YAG laser)
Related
periodic table
yttrium aluminum garnet laser (YAG)
Specific
yttrium aluminum garnet (YAG)
Yttrium-90
General
chemical element
metal
Properties
SIZE: AW = 88.906
atomic number
VALUE: 39
VALENCE: KR 4D1 5S2
Database Correlations
PUBCHEM correlations
References
- Webster's Ninth New Collegiate Dictionary, Miriam-
Webster Inc. Springfield, MA 1990
- Chemical & Engineering News, Sept 8, 2003