Yttrium

Yttrium is a chemical elemental metal with an atomic number of 39, a chemical symbol of Y, and an atomic weight of 88.905(abridged). It is classified as a transition metal. It is atomic number 39 which means it has 39 protons in an atom. It is silvery-white, solid at room temperature, and tends to form crystals. In chunk form, it is unreactive in air, but powdered yttrium may burn at 400 degrees Celsius. It has several uses, which include lasers, TV's, and metallurgy. It is a transition metal, and along with terbium, erbium, and ytterbium, is one of the four elements to be named after the town of Ytterby in Sweden, all of which are rare earth elements.

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Yttrium Media

Left: Soluble yttrium salts reacts with carbonate, forming white precipitate yttrium carbonate. Right: Yttrium carbonate is soluble in excess alkali metal carbonate solution
Mira is an example of the type of red giant star in which most of the yttrium in the solar system was created
Johan Gadolin discovered yttrium oxide
Xenotime crystals contain yttrium
A piece of yttrium. Yttrium is difficult to separate from other rare-earth elements.
Yttrium is one of the elements that was used to make the red color in CRT televisions
Nd:YAG laser rod 0.5 cm (0.20 in) in diameter