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A chemical element, in the periodic table yttrium has the symbol Y and atom number 39, and an atomic mass of 88.9059. The ground state electronic orbitals are [Kr]4d15s2. The metal is silverish in color and lustrous, and is found in almost all rare earth minerals. Yttrium-europium compounds are found in the red phosphors of color televisions and this represents a major usage of the element.
The common oxidation state of yttrium is +3.
This element is named after the Swedish town of Ytterby.
External Link:
Los Alamos National Laboratory's Chemistry Division: Periodic Table - Yttrium
See: Periodic Table