Question

Name of element: (Yttrium)
Freezing point:
Boiling point:
Phase under normal room temperature:
Rare or abundant?
What's the normal/alternative form found?
What is it used for?

Answer 1

Answer:

yttrium

Explanation:

YTTRIUM

Yttrium and its compounds have numerous uses. Major applications include hosts for red phosphors for fluorescent lamps, colour displays, and TV screens that use cathode-ray tubes. Yttrium aluminum garnet (YAG) doped with other rare earths is used in lasers; yttrium iron garnet (YIG) is used for microwave filters, radars, communications, and synthetic gems; and yttrium oxide-stabilized cubic zirconia is used in oxygen sensors, structural ceramics, thermal barrier coatings, and synthetic diamonds. A major use of yttrium is in high-temperature superconducting ceramics, such as YBa2Cu3O7, which has a superconducting transition temperature of 93 K (−180 °C, or −292 °F) for electrical power transmission lines and superconducting magnets. The metal is used as an alloying addition to ferrous and nonferrous alloys for improved corrosion resistance and oxidation resistance. Yttrium compounds are used in optical glasses and as catalysts.

Yttrium behaves chemically as a typical rare-earth element having an oxidation state of +3. Its ionic radius is near the radii of dysprosium and holmium, making separation from those elements difficult. Besides the white sesquioxide, yttrium forms a series of nearly white salts including the sulfate, the trichloride, and the carbonate.

Element Properties

atomic number 39

atomic weight 88.90585

melting point 1,522 °C (2,772 °F)

boiling point 3,345 °C (6,053 °F)

specific gravity 4.469 (24 °C, or 75 °F)

oxidation state +3

electron configuration [Kr]4d15s2

This article was most recently revised and updated by Erik Gregersen, Senior Editor.

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Answer 2

Answer:

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