Cobaut
English: Cobalt

Cobaut,  27Co
cobalt chips
General properties
Appearancehaird lustrous gray metal
Staundart atomic wecht (Ar, staundart)58.933194(3)[1]
Cobaut in the periodic cairt
HydrogenHelium
LithiumBerylliumBoronCarbonNitrogenOxygenFluorineNeon
SodiumMagnesiumAluminiumSiliconPhosphorusSulfurChlorineArgon
PotassiumCalciumScandiumTitaniumVanadiumChromiumManganeseAirnCobaltNickelCapperZincGalliumGermaniumArsenicSeleniumBromineKrypton
RubidiumStrontiumYttriumZirconiumNiobiumMolybdenumTechnetiumRutheniumRhodiumPalladiumSiller (element)CadmiumIndiumTinAntimonyTelluriumIodineXenon
CaesiumBariumLanthanumCeriumPraseodymiumNeodymiumPromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumHafniumTantalumTungstenRheniumOsmiumIridiumPlatinumGowdMercur (element)ThalliumLeid (element)BismuthPoloniumAstatineRadon
FranciumRadiumActiniumThoriumProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumRutherfordiumDubniumSeaborgiumBohriumHassiumMeitneriumDarmstadtiumRoentgeniumCoperniciumUnuntriumFleroviumUnunpentiumLivermoriumUnunseptiumUnunoctium
-

Co

Rh
ironcobautnickel
Atomic nummer (Z)27
Groupgroup 9
Periodperiod 4
Element category  transition metal
Blockd-block
Electron confeeguration[Ar] 4s2 3d7
Electrons per shell
2, 8, 15, 2
Pheesical properties
Colourmetallic gray
Phase (at STP)solit
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)1101001 k10 k100 k
at T (K)179019602165242327553198
Atomic properties
Oxidation states5, 4, 3, 2, 1, -1[2] ​amphoteric oxide
ElectronegativityPauling scale: 1.88
Ionisation energies
  • (more)
Atomic radiusempirical: 125 pm
Covalent radius126±3 (law spin), 150±7 (heich spin) pm
Coloyr lines in a spectral range
Spectral lines o Cobaut
Miscellanea
Creestal structur ​hexagonal 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
Bouk 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
Iso­topeAbun­danceHauf-life (t1/2)Decay modePro­duct
56Cosyn77.27 dεFe
57Cosyn271.79 dεFe
58Cosyn70.86 dεFe
59Co100%stable
60Cosyn5.2714 yβ, γNi
| references | in Wikidata

Cobaut is a chemical element wi seembol Co an atomic nummer 27. Lik nickel, cobaut in the Yird's crust is foond anly in chemically combined furm, save for smaa deposits foond in alloys o naitural meteoric iron. The free element, produced bi reductive smeltin, is a haird, lustrous, siller-gray metal.

Cobaut-based blue pigments (cobalt blue) hae been uised syne auncient times for jewelry an pents, an tae impairt a distinctive blue tint tae gless, but the colour wis later thocht bi alchemists tae be due tae the kent metal bismuth. Miners haed lang uised the name kobold ure (German for goblin ure) for some o the blue-pigment producin meenerals; thay war sae named acause thay war puir in kent metals, an gae pushionous arsenic-containin fumes whan smeltit. In 1735, sic ures war foond tae be reducible tae a new metal (the first diskivert syne ancient times), an this wis ultimately named for the kobold.

The day, some cobaut is produced speceefically frae ane o a nummer o metallic-lustered ures, sic as for example cobaltite (CoAsS). The element is houiver mair uisually produced as a bi-product o capper an nickel minin. The capper belt in the Democratic Republic o the Congo (DRC) an Zambie yields maist o the global cobalt production. The DRC alane accountit for mair nor 50% o warld production in 2016 (123,000 tonnes), accordin tae Natural Resources Canada.[3]

Cobalt is primarily uised in the manufactur o magnetic, wear-resistant an heich-strenth alloys. The compoonds cobaut silicate an cobaut(II) aluminate (CoAl2O4, cobaut blue) gie a distinctive deep blue colour tae gless, ceramics, inks, pents an varnishes. Cobaut occurs naiturally as anerly ane stable isotope, cobalt-59. Cobalt-60 is a commercially important radioisotope, uised as a radioactive tracer an for the production o heich energy gamma rays.

Cobalt is the active centre o a group of coenzymes cried cobalamins. , the best-kent example of the teep, is an essential veetamin for aw ainimals. Cobaut in inorganic form is an aw a micronutrient for bacteria, algae, an fungi.

  • references

References

  1. Meija, J.; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. 10.1515/pac-2015-0305. 
  2. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth–Heinemann. pp. 1117–1119. ISBN 0080379419. 
  3. Danielle Bochove (November 1, 2017). "Electric car future spurs Cobalt rush: Swelling demand for product breathes new life into small Ontario town". Vancouver Sun. Bloomberg. 
Other Languages
Afrikaans: Kobalt
አማርኛ: ኮባልት
aragonés: Cobol
العربية: كوبالت
asturianu: Cobaltu
azərbaycanca: Kobalt
تۆرکجه: کوبالت
беларуская: Кобальт
беларуская (тарашкевіца)‎: Кобальт
български: Кобалт
भोजपुरी: कोबाल्ट
বাংলা: কোবাল্ট
བོད་ཡིག: གོ་བྰལ་
brezhoneg: Kobalt
bosanski: Kobalt
català: Cobalt
Mìng-dĕ̤ng-ngṳ̄: Gū (gĭng-sṳ̆k)
Cebuano: Kobalto
کوردی: کۆبالت
corsu: Cobaltu
čeština: Kobalt
Чӑвашла: Кобальт
Cymraeg: Cobalt
dansk: Kobolt
Deutsch: Cobalt
ދިވެހިބަސް: ކޮބާލްޓް
Ελληνικά: Κοβάλτιο
English: Cobalt
Esperanto: Kobalto
español: Cobalto
eesti: Koobalt
euskara: Kobalto
فارسی: کبالت
suomi: Koboltti
français: Cobalt
Nordfriisk: Koobalt
furlan: Cobalt
Gaeilge: Cóbalt
Gàidhlig: Còbalt
galego: Cobalto
ગુજરાતી: કોબાલ્ટ
Gaelg: Cobalt
客家語/Hak-kâ-ngî: Cobalt
עברית: קובלט
हिन्दी: कोबाल्ट
Fiji Hindi: Cobalt
hrvatski: Kobalt
magyar: Kobalt
հայերեն: Կոբալտ
Արեւմտահայերէն: Կոբաղդ
interlingua: Cobalt
Bahasa Indonesia: Kobalt
Ido: Kobalto
íslenska: Kóbolt
italiano: Cobalto
日本語: コバルト
la .lojban.: ridjinme
Jawa: Kobalt
ქართული: კობალტი
Kabɩyɛ: Kobalti
қазақша: Кобальт
ಕನ್ನಡ: ಕೋಬಾಲ್ಟ್
한국어: 코발트
kurdî: Kobalt
коми: Кобальт
Кыргызча: Кобальт
Latina: Cobaltum
Lëtzebuergesch: Kobalt
Limburgs: Kobalt
Ligure: Cobalto
lumbaart: Cobalto
lietuvių: Kobaltas
latviešu: Kobalts
македонски: Кобалт
മലയാളം: കൊബാൾട്ട്
монгол: Кобальт
मराठी: कोबाल्ट
кырык мары: Кобальт
Bahasa Melayu: Kobalt
မြန်မာဘာသာ: ကိုဘော့ (ဒြပ်စင်)
эрзянь: Кобальт
Plattdüütsch: Kobalt
नेपाली: कोबाल्ट
नेपाल भाषा: कोबाल्ट
Nederlands: Kobalt
norsk nynorsk: Kobolt
norsk: Kobolt
Diné bizaad: Béésh łibáhí
occitan: Cobalt
Livvinkarjala: Kobal’tu
ଓଡ଼ିଆ: କୋବାଲ୍‌ଟ
ਪੰਜਾਬੀ: ਕੋਬਾਲਟ
पालि: कोबाल्ट
polski: Kobalt
Piemontèis: Cobalt
پنجابی: کوبالٹ
português: Cobalto
Runa Simi: Kubaltu
română: Cobalt
armãneashti: Cobaltu
русский: Кобальт
संस्कृतम्: कोबाल्ट
sicilianu: Cobbaltu
srpskohrvatski / српскохрватски: Kobalt
සිංහල: කොබෝල්ට්
Simple English: Cobalt
slovenčina: Kobalt
slovenščina: Kobalt
Soomaaliga: Kobalti
shqip: Kobalti
српски / srpski: Кобалт
Seeltersk: Cobalt
Sunda: Kobalt
svenska: Kobolt
Kiswahili: Kobalti
తెలుగు: కోబాల్ట్
тоҷикӣ: Кобалт
Tagalog: Kobalto
Türkçe: Kobalt
татарча/tatarça: Кобальт
ئۇيغۇرچە / Uyghurche: كوبالت
українська: Кобальт
اردو: کوبالٹ
oʻzbekcha/ўзбекча: Kobalt
vepsän kel’: Kobal't (himine element)
Tiếng Việt: Coban
walon: Cobalt
Winaray: Cobalto
吴语:
хальмг: Кобалтион
ייִדיש: קאבאלט
Yorùbá: Cobalt
中文:
文言:
Bân-lâm-gú: Cobalt
粵語: