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INTRODUCTION
Yttrium was named for the town of Ytterby in Sweden, the location of a quarry that yielded several rare earth elements, and ranks about 29th in abundance of the elements in Earth's crust.
Yttrium is sometimes included among the rare earth elements,because is found as an oxide in rare earth minerals.
BASIC INFORMATIONS
- Atomic Number
- 39
- Atomic Mass
- 88.90584
- Atomic radius
- 0.162
- Ionization energy
- 616
- Electronic config
- 2,8,18,9,2
- Principal Valency
- +2
- Density g/cm³
- 4.5
- Melting point °C
- 1526
- Boiling point °C
- 3336
- Type of Element
- Metal
- Electronegativity
- 1.2
- Element Category
- Scandium Group
- Appearance
- Silvery white solid
- Block
- d-block
- Period
- 5
- Group
- 3
- No of Isotopes
- 33
- Occurrence
- Combine form
- Abundance in ppm
- 31
- Year of Discovery
- 1789
EXTRACTION
It is obtain by the reduction of yttrium triflouride with calcium
OXIDATION STATES
+3,+2,+1 (Weakly Basic)
MAJOR SOURCE
monazite and bastnasite
EXAMPLES OF COMPOUND PRESENT
Yttrium triflouride, Yttrium hydroxide
ECONOMIC IMPORTANCE
* Yttrium is used extensively in phosphors employed in color television tubes.
* It is used to make synthetic garnets used in radar and as gemstones.
