Neodymium

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

Neodymium, ₆₀Nd

Neodymium
Pípè	/ˌniːoʊˈdɪmiəm/ ​(NEE-oh-DIM-ee-əm)
Ìhànsójú	silvery white
Ìwúwo átọ̀mù Ar, std(Nd)	144.242(3)
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 praseodymium ← neodymium → promethium
Nọ́mbà átọ̀mù (Z)	60
Ẹgbẹ́	group n/a
Àyè	àyè 6
Àdìpọ̀	Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntì	Lanthanide
Ìtò ẹ̀lẹ́ktrọ́nù	[Xe] 4f4 6s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 22, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1297 K ​(1024 °C, ​1875 °F)
Ígbà ìhó	3347 K ​(3074 °C, ​5565 °F)
Kíki (near r.t.)	7.01 g/cm3
when liquid (at m.p.)	6.89 g/cm3
Heat of fusion	7.14 kJ/mol
Heat of	289 kJ/mol
Molar heat capacity	27.45 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1595 1774 1998 (2296) (2715) (3336)
Atomic properties
Oxidation states	0, +2, +3, +4 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.14
Atomic radius	empirical: 181 pm
Covalent radius	201±6 pm
Spectral lines of neodymium
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Speed of sound thin rod	2330 m/s (at 20 °C)
Thermal expansion	(r.t.) (α, poly) 9.6 µm/(m·K)
Thermal conductivity	16.5 W/(m·K)
Electrical resistivity	(r.t.) (α, poly) 643 n Ω·m
Magnetic ordering	paramagnetic, antiferromagnetic below 20K
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 hardness	343 MPa
Brinell hardness	265 MPa
CAS Number	7440-00-8
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 β−β− 3.367 150Sm