Yttrium

Frae Wikipedia
Jump to navigation Jump to search
Yttrium,  39Y
Yttrium sublimed dendritic and 1cm3 cube.jpg
General properties
Appearance sillery white
Staundart atomic wecht (Ar, staundart) 88.90584(1)[1]
Yttrium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Sc

Y

Lu
strontiumyttriumzirconium
Atomic nummer (Z) 39
Group group 3
Period period 5
Element category   transeetion metal
Block d-block
Electron confeeguration [Kr] 4d1 5s2
Electrons per shell
2, 8, 18, 9, 2
Pheesical properties
Phase (at STP) solit
Meltin pynt 1799 K ​(1526 °C, ​2779 °F)
Bylin pynt 3609 K ​(3336 °C, ​6037 °F)
Density (near r.t.) 4.472 g/cm3
when liquid (at m.p.) 4.24 g/cm3
Heat o fusion 11.42 kJ/mol
Heat o vapourisation 365 kJ/mol
Molar heat capacity 26.53 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1883 2075 (2320) (2627) (3036) (3607)
Atomic properties
Oxidation states 3, 2, 1 (weakly basic oxide)
Electronegativity Pauling scale: 1.22
Atomic radius empirical: 180 pm
Covalent radius 190±7 pm
Coloyr lines in a spectral range
Spectral lines o Yttrium
Miscellanea
Creestal structurhexagonal close-packed (hcp)
Hexagonal close packed creestal structur for yttrium
Speed o soond thin rod 3300 m/s (at 20 °C)
Thermal expansion (r.t.) (α, poly)
10.6 µm/(m·K)
Thermal conductivity 17.2 W/(m·K)
Electrical resistivity (r.t.) (α, poly) 596 n Ω·m
Magnetic orderin paramagnetic[2]
Young's modulus 63.5 GPa
Shear modulus 25.6 GPa
Bouk modulus 41.2 GPa
Poisson ratio 0.243
Brinell haurdness 589 MPa
CAS Nummer 7440-65-5
History
Diskivery Johan Gadolin (1794)
First isolation Carl Gustav Mosander (1840)
Main isotopes o yttrium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
87Y syn 3.35 d ε 87Sr
γ -
88Y syn 106.6 d ε 88Sr
γ -
89Y 100% stable
90Y syn 2.67 d β 90Zr
γ -
91Y syn 58.5 d β 91Zr
γ -
| references | in Wikidata

Yttrium is a chemical element wi seembol Y an atomic nummer 39. It is a sillery-metallic transeetion metal chemically seemilar tae the lanthanides an it haes eften been clessifee'd as a "rare yird element".[3] Yttrium is almaist always foond combined wi the lanthanides in rare yird minerals an is never foond in naiture as a free element. Its anly stable isotope, 89Y, is an aa its anly naiturally occurrin isotope.

In 1787, Carl Axel Arrhenius foond a new mineral near Ytterby in Swaden an named it ytterbite, efter the veelage. Johan Gadolin discovered yttrium's oxide in Arrhenius' sample in 1789,[4] an Anders Gustaf Ekeberg named the new oxide yttria. Elemental yttrium wis first isolated in 1828 bi Friedrich Wöhler.[5]

References[eedit | eedit soorce]

  1. Meija, J.; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305. 
  2. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  3. IUPAC contributors (2005). Edited by N G Connelly and T Damhus (with R M Hartshorn and A T Hutton), ed. Nomenclature of Inorganic Chemistry: IUPAC Recommendations 2005 (PDF). RSC Publishing. p. 51. ISBN 0-85404-438-8. Retrieved 2007-12-17. 
  4. Van der Krogt 2005
  5. CRC contributors (2007–2008). "Yttrium". In Lide, David R. CRC Handbook of Chemistry and Physics. 4. New York: CRC Press. p. 41. ISBN 978-0-8493-0488-0.