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Template:Infobox cobaut

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Cobaut, 27Co
Template:Infobox element/symbol-to-top-image/alt
Cobaut
PronunciationListeni/ˈkbɒlt/[1]
Appearancehaird lustrous gray metal
Standard atomic weight Ar, std(Co)58.933194(3)[2]
Cobaut 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
-

Co

Rh
ironcobautnickel
Atomic nummer (Z)27
Groupgroup 9
Periodperiod 4
Blockd-block
Element category  Transeetion metal
Electron confeeguration[Ar] 3d7 4s2
Electrons per shell2, 8, 15, 2
Pheesical properties
Colourmetallic gray
Phase at STPsolit
Meltin pynt1768 K ​(1495 °C, ​2723 °F)
Bylin pynt3200 K ​(2927 °C, ​5301 °F)
Density (near r.t.)8.90 g/cm3
when liquid (at m.p.)7.75 g/cm3
Heat o fusion16.06 kJ/mol
Heat o vapourisation377 kJ/mol
Molar heat capacity24.81 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1790 1960 2165 2423 2755 3198
Atomic properties
Oxidation states−3, −1, 0, +1, +2, +3, +4, +5[3] (an amphoteric oxide)
ElectronegativityPauling scale: 1.88
Ionisation energies
Atomic radiusempirical: 125 pm
Covalent radius126±3 (law spin), 150±7 (heich spin) pm
Colour lines in a spectral range
Colour lines in a spectral range
Spectral lines o cobaut
Ither properties
Naitural occurrenceprimordial
Creestal structurhexagonal close-packed (hcp)
Hexagonal close packed creestal structur for cobaut
Speed o soond thin rod4720 m/s (at 20 °C)
Thermal expansion13.0 µm/(m·K) (at 25 °C)
Thermal conductivity100 W/(m·K)
Electrical resistivity62.4 n Ω·m (at 20 °C)
Magnetic orderinferromagnetic
Young's modulus209 GPa
Shear modulus75 GPa
Bulk modulus180 GPa
Poisson ratio0.31
Mohs haurdness5.0
Vickers haurdness1043 MPa
Brinell haurdness700 MPa
CAS Nummer7440-48-4
History
DiskiveryGeorg Brandt (1732)
Main isotopes o cobaut
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
56Co syn 77.27 d ε 56Fe
57Co syn 271.79 d ε 57Fe
58Co syn 70.86 d ε 58Fe
59Co 100% stable
60Co syn 5.2714 y β, γ 60Ni
| references
style="text-align:left"|
in calc from C diff report ref
C 1495
K 1768 1768 0
F 2723 2723 0
WD 2719 Fahrenheit 1768 kelvin 1495 Celsius Edit this at Wikidata [4]
input C: 1495, K: 1768, F: 2723
comment
style="text-align:left"|
in calc from C diff report ref
C 2927
K 3200 3200 0
F 5301 5301 0
WD 5612 Fahrenheit 3200 kelvin 2927 Celsius Edit this at Wikidata [4]
input C: 2927, K: 3200, F: 5301
comment

References

  1. Oxford English Dictionary, 2nd Edition 1989.
  2. 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.
  3. a b Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth–Heinemann. pp. 1117–1119. ISBN 0080379419.
  4. a b https://webelements.com/cobalt/; date retrieved: 16 Januar 2024.