Yttrium
Chemical element
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Yttrium is a chemical element; it has symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element". Wikipedia
Symbol: Y
Atomic number: 39
Atomic mass: 88.90585 u
Discoverer: Johan Gadolin
Melting point: 2,779°F (1,526°C)
Boiling point: 6,040°F (3,338°C)
Discovered: 1794