Yttrium
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Yttrium is a chemical element, having the chemical symbol Y.
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Its atomic number (the number of protons) is 39. It has a Standard Atomic Weight of 88.90585(2), and is typically found as a solid in its elemental form.
Yttrium is considered to be a member of the "Transition metal" class of elements, has a boiling point of 3345 °C , and a melting point of 1,522 °C .