|Origin of Name||Named after Ytterby, Sweden.|
|Discovery Credits||Discovered by J. Gadolin at Abo, Finland.|
|Standard State||Solid at 77 F & 298 K|
|Description||Soft, silvery-white metal. Stable in air due to the formation of oxide film. Reacts with water to form hydrogen (H2). Used as yttrium phosphors to give red colors in television CRT screens; in X-ray filters, superconductors; super-alloys.
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