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PERIODIC TABLE
Yttrium
Atomic No. 39
Y
Yttrium
About Yttrium
Yttrium is a transition metal with atomic number 39 that is commonly grouped with the rare earth elements and predominantly forms +3 compounds. Yttrium aluminum garnet is a host for laser materials and phosphors, with its optical function determined by the incorporated dopants. Yttrium fluoride is used in protective coatings for semiconductor processing equipment exposed to corrosive plasmas. Yttrium tantalate provides another specialized application as a phosphor material for X ray imaging.
Properties
- Atomic Number
- 39
- Atomic Symbol
- Y
- Atomic Mass
- 88.9059
- CAS No.
- 7440-65-5
- Density
- 4.472 g/cm³
- Series
- transition metal
- Melting Point
- 1,526°C
- Boiling Point
- 3,345°C
- Thermal Conductivity
- 0.17 W/cm °C
- Heat of Fusion
- 11.4 kJ/mol
- Heat of Vaporization
- 380 kJ/mol
- Electronegativity
- 1.22 pauling
- Crystal Structure
- Hexagonal
- Electrical Conductivity
- 1.8×106 S/m
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