Neodymium

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Neodymium, 60Nd
Àdàkọ:Infobox element/symbol-to-top-image/alt
Neodymium
Pípè /ˌnˈdɪmiəm/ (NEE-oh-DIM-ee-əm)
Ìhànsójúsilvery white
Ìwúwo átọ̀mù Ar, std(Nd)144.242(3)Àdàkọ:CIAAW2013
Neodymium ní orí tábìlì àyè
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Gold Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
-

Nd

U
praseodymiumneodymiumpromethium
Nọ́mbà átọ̀mù (Z)60
Ẹgbẹ́group n/a
Àyèàyè 6
Àdìpọ̀Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntì  [[Àdàkọ:Infobox element/symbol-to-category]]
Ìtò ẹ̀lẹ́ktrọ́nùÀdàkọ:Infobox element/symbol-to-electron-configuration
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 22, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́1297 K ​(1024 °C, ​1875 °F)
Ígbà ìhó3347 K ​(3074 °C, ​5565 °F)
Kíki (near r.t.)7.01 g/cm3
when liquid (at m.p.)6.89 g/cm3
Heat of fusion7.14 kJ/mol
Heat of 289 kJ/mol
Molar heat capacity27.45 J/(mol·K)
 pressure
Atomic properties
Oxidation statesÀdàkọ:Infobox element/symbol-to-oxidation-state
ElectronegativityPauling scale: 1.14
Atomic radiusempirical: 181 pm
Covalent radius201±6 pm
Àdàkọ:Infobox element/spectral lines
Other properties
Natural occurrenceÀdàkọ:Infobox element/symbol-to-occurrence
Crystal structureÀdàkọ:Infobox element/crystal structure
Speed of sound thin rod2330 m/s (at 20 °C)
Thermal expansion(r.t.) (α, poly) 9.6 µm/(m·K)
Thermal conductivity16.5 W/(m·K)
Electrical resistivity(r.t.) (α, poly) 643 n Ω·m
Magnetic orderingparamagnetic, antiferromagnetic below 20K [1]
Young's modulus(α form) 41.4 GPa
Shear modulus(α form) 16.3 GPa
Bulk modulus(α form) 31.8 GPa
Poisson ratio(α form) 0.281
Vickers hardness343 MPa
Brinell hardness265 MPa
CAS Number7440-00-8
Main isotopes of neodymium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
142Nd 27.2% 142Nd is stable with 82 neutrons
143Nd 12.2% 143Nd is stable with 83 neutrons
144Nd 23.8% 2.29×1015y α 1.905 140Ce
145Nd 8.3% 145Nd is stable with 85 neutrons
146Nd 17.2% 146Nd is stable with 86 neutrons
148Nd 5.7% 148Nd is stable with 88 neutrons
150Nd 5.6% 6.7×1018y ββ 3.367 150Sm
Àdàkọ:Category-inline
| references

Neodymium (pípè /ˌniː.ɵˈdɪmiəm/ NEE-o-DIM-ee-əm) je apilese kemika to ni ami-idamo Nd ati nomba atomu 60.


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. Gschneidner, K.A., and Eyring, L., Handbook on the Physics and Chemistry of Rare Earths, North Holland Publishing Co., Amsterdam, 1978.