Erbium

Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
Jump to navigation Jump to search
Erbium, 68Er
Àdàkọ:Infobox element/symbol-to-top-image/alt
Erbium
Pípè /ˈɜːrbiəm/ (UR-bee-əm)
Ìhànsójúsilvery white
Ìwúwo átọ̀mù Ar, std(Er)167.259(3)Àdàkọ:CIAAW2013
nọ́mbà ìsújọEr:
Erbium 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
-

Er

Fm
holmiumerbiumthulium
Nọ́mbà átọ̀mù (Z)68
Ẹgbẹ́group n/a
Àyèàyè 6
Àdìpọ̀Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntìÀdàkọ:Infobox element/category format
Ìtò ẹ̀lẹ́ktrọ́nùÀdàkọ:Infobox element/symbol-to-electron-configuration
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 30, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́1802 K ​(1529 °C, ​2784 °F)
Ígbà ìhó3141 K ​(2868 °C, ​5194 °F)
Kíki (near r.t.)9.066 g/cm3
when liquid (at m.p.)8.86 g/cm3
Heat of fusion19.90 kJ/mol
Heat of 280 kJ/mol
Molar heat capacity28.12 J/(mol·K)
 pressure
Atomic properties
Oxidation statesÀdàkọ:Infobox element/symbol-to-oxidation-state
ElectronegativityPauling scale: 1.24
Atomic radiusempirical: 176 pm
Covalent radius189±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 rod2830 m/s (at 20 °C)
Thermal expansion(r.t.) (poly) 12.2 µm/(m·K)
Thermal conductivity14.5 W/(m·K)
Electrical resistivity(r.t.) (poly) 0.860 µ Ω·m
Magnetic orderingparamagnetic at 300 K
Young's modulus69.9 GPa
Shear modulus28.3 GPa
Bulk modulus44.4 GPa
Poisson ratio0.237
Vickers hardness589 MPa
Brinell hardness814 MPa
CAS Number7440-52-0
Main isotopes of erbium
Àdàkọ:Infobox element/isotopes table
Àdàkọ:Category-inline
| references


Itumosi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]