Periodic Table of Elements

Element Yttrium - Y

Comprehensive data on the chemical element Yttrium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Yttrium. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

Yttrium Menu

Overview of Yttrium

Yttrium's Name in Other Languages

  • Latin: Yttrium
  • Czech: Yttrium
  • Croatian: Itrij
  • French: Yttrium
  • German: Yttrium - s
  • Italian: Ittrio
  • Norwegian: Yttrium
  • Portuguese: Itrio
  • Russian: Иттрий
  • Spanish: Itrio
  • Swedish: Yttrium

Atomic Structure of Yttrium

Chemical Properties of Yttrium

Physical Properties of Yttrium

  • Atomic Mass Average: 88.90585
  • Boiling Point: 3611K 3338°C 6040°F
  • Coefficient of lineal thermal expansion/K-1: 10.6E-6
  • Conductivity
    Electrical: 0.0166 106/cm Ω
    Thermal: 0.172 W/cmK
  • Density: 4.47g/cc @ 300K
  • Description:
    Silvery metal, which is stable in air because of an oxide film that forms on its surface.
  • Elastic Modulus:
    • Bulk: 41/GPa
    • Rigidity: 25.5/GPa
    • Youngs: 66.3/GPa
  • Enthalpy of Atomization: 418 kJ/mole @ 25°C
  • Enthalpy of Fusion: 17.15 kJ/mole
  • Enthalpy of Vaporization: 393 kJ/mole
  • Flammablity Class: Non-combustible solid (except as dust)
  • Freezing Point: see melting point
  • Hardness Scale
    • Brinell: 589 MN m-2
  • Heat of Vaporization: 363kJ/mol
  • Melting Point: 1799K 1526°C 2779°F
  • Molar Volume: 19.89 cm3/mole
  • Physical State (at 20°C & 1atm): Solid
  • Specific Heat: 0.3J/gK
  • Vapor Pressure = 5.31Pa@1526°C

Regulatory / Health

  • CAS Number
    • 7440-65-5
  • RTECS: ZG2980000
  • OSHA Permissible Exposure Limit (PEL)
  • OSHA PEL Vacated 1989
  • NIOSH Recommended Exposure Limit (REL)
  • Routes of Exposure: Inhalation; Ingestion; Skin and/or eye contact
  • Target Organs: Eyes, respiratory system, liver
  • Levels In Humans:
    Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
    • Blood/mg dm-3: 0.0047
    • Bone/p.p.m: 0.07
    • Liver/p.p.m: <0.01
    • Muscle/p.p.m: 0.02
    • Daily Dietary Intake: 0.016 mg
    • Total Mass In Avg. 70kg human: 0.6 mg

Who / Where / When / How

  • Discoverer: Johann Gadolin
  • Discovery Location: Äbo Finland
  • Discovery Year: 1794
  • Name Origin:
    From the town of Ytterby, Sweden.
  • Abundance of Yttrium:
    • Earth's Crust/p.p.m.: 30
    • Seawater/p.p.m.: 0.000009
    • Atmosphere/p.p.m.: N/A
    • Sun (Relative to H=1E12): 125
  • Sources of Yttrium:
    Found in xenotime, bastnasite, fergusonite and samarskite ores. Annual world wide production is around 400 tons. Primary mining areas are USA, Russia, Norway and Madagascar.
  • Uses of Yttrium:
    Combined with europium to make red phosphors for color TV's. Yttrium oxide and iron oxide combine to form a crystal garnet used in radars. Also used in lasers, camera lenses and fireproof bricks.
  • Additional Notes:

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