Lutetium

Lutetium, ₇₁Lu

Lutetium
Pípè	/ljuːˈtiːʃiəm/ ​(lew-TEE-shee-əm)
Ìhànsójú	silvery white
Ìwúwo átọ̀mù Ar, std(Lu)	174.9668(1)
Lutetium 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 - ↑ Lu ↓ Lr ytterbium ← lutetium → hafnium
Nọ́mbà átọ̀mù (Z)	71
Ẹgbẹ́	group n/a
Àyè	àyè 6
Àdìpọ̀	Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì	Lanthanide
Ìtò ẹ̀lẹ́ktrọ́nù	[Xe] 4f14 5d1 6s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 32, 9, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1925 K ​(1652 °C, ​3006 °F)
Ígbà ìhó	3675 K ​(3402 °C, ​6156 °F)
Kíki (near r.t.)	9.841 g/cm3
when liquid (at m.p.)	9.3 g/cm3
Heat of fusion	ca. 22 kJ/mol
Heat of	414 kJ/mol
Molar heat capacity	26.86 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1906 2103 2346 (2653) (3072) (3663)
Atomic properties
Oxidation states	0, +1, +2, +3 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.27
Atomic radius	empirical: 174 pm
Covalent radius	17±8 pm
Spectral lines of lutetium
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Thermal expansion	(r.t.) (poly) 9.9 µm/(m·K)
Thermal conductivity	16.4 W/(m·K)
Electrical resistivity	(r.t.) (poly) 582 n Ω·m
Magnetic ordering	paramagnetic
Young's modulus	68.6 GPa
Shear modulus	27.2 GPa
Bulk modulus	47.6 GPa
Poisson ratio	0.261
Vickers hardness	1160 MPa
Brinell hardness	893 MPa
CAS Number	7439-94-3
Main isotopes of lutetium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 173Lu syn 1.37 y ε 0.671 173Yb 174Lu syn 3.31 y ε 1.374 174Yb 175Lu 97.41% 175Lu is stable with 104 neutrons 176Lu 2.59% 3.78×1010y β− 1.193 176Hf