Template:Infobox neodymium

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Neodymium, 60Nd
Template:Infobox element/symbol-to-top-image/alt
Neodymium
Pronunciation/ˌn.ˈdɪmiəm/ (NEE-oh-DIM-ee-əm)
Appearancesilvery white
Standard atomic weight Ar, std(Nd)144.242(3)[1]
Neodymium 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


Nd

U
praseodymiumneodymiumpromethium
Atomic nummer (Z)60
Groupgroup n/a
Periodperiod 6
Blockf-block
Element category  Lanthanide
Electron confeeguration[Xe] 4f4 6s2
Electrons per shell2, 8, 18, 22, 8, 2
Pheesical properties
Phase at STPsolid
Meltin pynt1297 K ​(1024 °C, ​1875 °F)
Bylin pynt3347 K ​(3074 °C, ​5565 °F)
Density (near r.t.)7.01 g/cm3
when liquid (at m.p.)6.89 g/cm3
Heat o fusion7.14 kJ/mol
Heat o vapourisation289 kJ/mol
Molar heat capacity27.45 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1595 1774 1998 (2296) (2715) (3336)
Atomic properties
Oxidation states0,[2] +2, +3, +4 (a mildly basic oxide)
ElectronegativityPauling scale: 1.14
Ionisation energies
  • 1st: 533.1 kJ/mol
  • 2nd: 1040 kJ/mol
  • 3rd: 2130 kJ/mol
Atomic radiusempirical: 181 pm
Covalent radius201±6 pm
Colour lines in a spectral range
Spectral lines o neodymium
Ither properties
Naitural occurrenceprimordial
Creestal structur ​dooble hexagonal close packed
Speed o soond thin rod2330 m/s (at 20 °C)
Thermal expansionα, poly: 9.6 µm/(m·K) (at r.t.)
Thermal conductivity16.5 W/(m·K)
Electrical resistivityα, poly: 643 nΩ·m
Magnetic orderinparamagnetic, antiferromagnetic ablo 20 K[3]
Magnetic susceptibility+5628.0·10−6 cm3/mol (287.7 K)[4]
Young's modulusα form: 41.4 GPa
Shear modulusα form: 16.3 GPa
Bulk modulusα form: 31.8 GPa
Poisson ratioα form: 0.281
Vickers haurdness345–745 MPa
Brinell haurdness265–700 MPa
CAS Nummer7440-00-8
History
DiskiveryCarl Auer von Welsbach (1885)
Main isotopes o neodymium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
142Nd 27.2% stable
143Nd 12.2% stable
144Nd 23.8% 2.29×1015 y α 140Ce
145Nd 8.3% stable
146Nd 17.2% stable
148Nd 5.8% stable
150Nd 5.6% 6.7×1018 y ββ 150Sm
| references
style="text-align:left"|
in calc from C diff report ref
C 1024
K 1297 1297 0
F 1875 1875 0
WD Edit this at Wikidata
input C: 1024, K: 1297, F: 1875
comment
style="text-align:left"|
in calc from C diff report ref
C 3074
K 3347 3347 0
F 5565 5565 0
WD Edit this at Wikidata
input C: 3074, K: 3347, F: 5565
comment
Neodymium
Pr ←
iso
60
Nd E
→ Pm
v · e

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  1. Meija, Juris; 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. Yttrium and all lanthanides except Ce, Pm, Eu, Tm, Yb have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017.
  3. Gschneidner, K. A.; Eyring, L. (1978). Handbook on the Physics and Chemistry of Rare Earths. Amsterdam: North Holland. ISBN 0444850228.
  4. Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
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