Kobalt (Co)

chemical element with symbol Co and atomic number 27

Atomic Number	27
Atomic Weight	58.933194
Niver mas	59

Group	9
Period	4
Block	d

Proton	27 p⁺
Neutron	32 n⁰
Elektron	27 e^-

Physical Property

Atomic Radius	135 pm 233 pm
molar volume	6,7 cm³/mol
Covalent Radius	111 pm 103 pm 96 pm 137 pm 138 pm
Metallic Radius	116 pm 125 pm
ionic radius	58 pm 67 pm 65 pm 74,5 pm 90 pm 54,5 pm 61 pm 40 pm 53 pm
Crystal Radius	72 pm 81 pm 79 pm 88,5 pm 104 pm 68,5 pm 75 pm 54 pm 67 pm
Van der Waals radius	200 pm 200 pm 223 pm 287,2 pm
density	8,86 g/cm³ 7 750 kg/m³

Chemical Property

energiezh

proton affinity	742,7 kJ/mol
electron affinity	0,66225646 eV/particle
ionization energy	7,88101 eV/particle 17,0844 eV/particle 33,5 eV/particle 51,27 eV/particle 79,5 eV/particle 102 eV/particle 129 eV/particle 157,8 eV/particle 186,14 eV/particle 275,4 eV/particle 305,32 eV/particle 336,15 eV/particle 378,55 eV/particle 410 eV/particle 441,1 eV/particle 511,96 eV/particle 546,588 eV/particle 1 397,2 eV/particle 1 504,5 eV/particle 1 606 eV/particle 1 724 eV/particle 1 844 eV/particle 1 960,83 eV/particle 2 119,4 eV/particle 2 218,876 eV/particle 9 544,183 eV/particle 10 012,122 eV/particle

enthalpy of vaporization	389,1 kJ/mol
enthalpy of fusion	15,48 kJ/mol
standard enthalpy of formation	426,7 kJ/mol
Elektron

electron shell	2, 8, 15, 2

valence electron	2 ⓘ

electron configuration	[Ar] 3d⁷ 4s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁷ 4s²

oxidation number	-3, -1, 0, 1, 2, 3, 4, 5
electronegativity	10,86 eV/particle 0.1432363 1.88
Electrophilicity Index	1,2638504937543713 eV/particle
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point	3 200,15 K
Melting Point	1 768,15 K
critical pressure
critical temperature
Poent tric'hement
appearance
liv	Gray #ff1493 #f090a0 #f090a0
appearance	hard lustrous gray metal
refractive index
thermodynamic material property
Thermal Conductivity	100 W/(m K)
thermal expansion	0,000013 1/K
molar heat capacity	24,81 J/(mol K)
Specific Heat Capacity	0,421 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	17 MS/m
electrical resistivity	0,00000006000000000002 Ω*m
superconductivity
Gwarellegezh
type	ferromagnetic
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature	1 394 K
Néel temperature
framm
Crystal Structure	Simple Hexagonal (HEX)
lattice constant	2,51 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	700 MPa 5 MPa 1 043 MPa
bulk modulus	180 GPa
shear modulus	75 GPa
Young's modulus	209 GPa
Poisson's ratio	0,31
speed of sound	4 720 m/s
rummatadur
Category	Transition metals, Transition metals
CAS Group	VIIIA
IUPAC Group	VIII
Glawe Number	70
Mendeleev Number	63
Pettifor Number	64
Geochemical Class	first series transition metal
Goldschmidt classification	siderophile

other

Gas Basicity	719,8 kJ/mol
polarizability	55 ± 4 a₀
C6 Dispersion Coefficient	408 a₀ 461 a₀
allotrope
Neutron cross section	37,2
Neutron Mass Absorption	0,021
quantum number	4F9/2
space group	194 (P63/mmc)

Isotopes of Cobalt

Stable Isotopes	1
Unstable Isotopes	31
Natural Isotopes	1

⁴⁷Co

Niver mas	47
niver a neutron	20
Relative Atomic Mass	47,011401 ± 0,000644 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	7/2
nuclear quadrupole moment
time of discovery or invention
parity	-

decay mode	intensity
p (proton emission)

⁴⁸Co

Niver mas	48
niver a neutron	21
Relative Atomic Mass	48,001857 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	6
nuclear quadrupole moment
time of discovery or invention
parity	+

decay mode	intensity
p (proton emission)

⁴⁹Co

Niver mas	49
niver a neutron	22
Relative Atomic Mass	48,989501 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	7/2
nuclear quadrupole moment
time of discovery or invention
parity	-

decay mode	intensity
p (proton emission)

⁵⁰Co

Niver mas	50
niver a neutron	23
Relative Atomic Mass	49,981117 ± 0,000135 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	38,8 ± 0,2 ms
spin	6
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	70.5%
2p (2-proton emission)

⁵¹Co

Niver mas	51
niver a neutron	24
Relative Atomic Mass	50,970647 ± 0,000052 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	68,8 ± 1,9 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1987
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	3.8%

⁵²Co

Niver mas	52
niver a neutron	25
Relative Atomic Mass	51,963130224 ± 0,000005669 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	111,7 ± 2,1 ms
spin	6
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)

⁵³Co

Niver mas	53
niver a neutron	26
Relative Atomic Mass	52,954203278 ± 0,000001854 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	244,6 ± 2,8 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1970
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵⁴Co

Niver mas	54
niver a neutron	27
Relative Atomic Mass	53,948459075 ± 0,00000038 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	193,27 ± 0,06 ms
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1952
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵⁵Co

Niver mas	55
niver a neutron	28
Relative Atomic Mass	54,941996416 ± 0,000000434 Da
g-factor	1,3777142857143 ± 0,00085714285714286
natural abundance
radioactivity	☢️ radioactive element
half-life	17,53 ± 0,03 h
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1938
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵⁶Co

Niver mas	56
niver a neutron	29
Relative Atomic Mass	55,939838032 ± 0,00000051 Da
g-factor	0,9625 ± 0,0025
natural abundance
radioactivity	☢️ radioactive element
half-life	77,236 ± 0,026 d
spin	4
nuclear quadrupole moment	0,25 ± 0,09
time of discovery or invention	1941
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁵⁷Co

Niver mas	57
niver a neutron	30
Relative Atomic Mass	56,936289819 ± 0,000000553 Da
g-factor	1,3485714285714 ± 0,0028571428571429
natural abundance
radioactivity	☢️ radioactive element
half-life	271,811 ± 0,032 d
spin	7/2
nuclear quadrupole moment	0,54 ± 0,1
time of discovery or invention	1941
parity	-

decay mode	intensity
ϵ (electron capture)	100%

⁵⁸Co

Niver mas	58
niver a neutron	31
Relative Atomic Mass	57,935751292 ± 0,000001237 Da
g-factor	2,022 ± 0,004
natural abundance
radioactivity	☢️ radioactive element
half-life	70,844 ± 0,02 d
spin	2
nuclear quadrupole moment	0,23 ± 0,03
time of discovery or invention	1941
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
e⁺ (positron emission)	14.79%
ϵ (electron capture)	85.21%

⁵⁹Co

Niver mas	59
niver a neutron	32
Relative Atomic Mass	58,933193524 ± 0,000000426 Da
g-factor
natural abundance	100
radioactivity	stable isotope
half-life	Not Radioactive ☢️
spin	7/2
nuclear quadrupole moment	0,42 ± 0,03
time of discovery or invention	1923
parity	-

⁶⁰Co

Niver mas	60
niver a neutron	33
Relative Atomic Mass	59,933815536 ± 0,000000433 Da
g-factor	0,7598 ± 0,0016
natural abundance
radioactivity	☢️ radioactive element
half-life	5,2714 ± 0,0006 y
spin	5
nuclear quadrupole moment	0,46 ± 0,06
time of discovery or invention	1941
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶¹Co

Niver mas	61
niver a neutron	34
Relative Atomic Mass	60,932476031 ± 0,000000901 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,649 ± 0,005 h
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1947
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶²Co

Niver mas	62
niver a neutron	35
Relative Atomic Mass	61,934058198 ± 0,00001994 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,54 ± 0,1 m
spin	2
nuclear quadrupole moment
time of discovery or invention	1949
parity

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶³Co

Niver mas	63
niver a neutron	36
Relative Atomic Mass	62,93359963 ± 0,000019941 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	26,9 ± 0,4 s
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1960
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶⁴Co

Niver mas	64
niver a neutron	37
Relative Atomic Mass	63,935810176 ± 0,000021476 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	300 ± 30 ms
spin	1
nuclear quadrupole moment
time of discovery or invention	1969
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶⁵Co

Niver mas	65
niver a neutron	38
Relative Atomic Mass	64,936462071 ± 0,000002235 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,16 ± 0,03 s
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1978
parity

decay mode	intensity
β⁻ (β⁻ decay)	100%

⁶⁶Co

Niver mas	66
niver a neutron	39
Relative Atomic Mass	65,939442943 ± 0,000015 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	194 ± 17 ms
spin	1
nuclear quadrupole moment
time of discovery or invention	1985
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁶⁷Co

Niver mas	67
niver a neutron	40
Relative Atomic Mass	66,940609625 ± 0,000006917 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	329 ± 28 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1985
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁶⁸Co

Niver mas	68
niver a neutron	41
Relative Atomic Mass	67,944559401 ± 0,000004142 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	200 ± 20 ms
spin	7
nuclear quadrupole moment
time of discovery or invention	1985
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁶⁹Co

Niver mas	69
niver a neutron	42
Relative Atomic Mass	68,945909 ± 0,000092 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	180 ± 20 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1985
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

⁷⁰Co

Niver mas	70
niver a neutron	43
Relative Atomic Mass	69,9500534 ± 0,0000118 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	508 ± 7 ms
spin	1
nuclear quadrupole moment
time of discovery or invention	1998
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷¹Co

Niver mas	71
niver a neutron	44
Relative Atomic Mass	70,952366923 ± 0,00049923 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	80 ± 3 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1992
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	3%

⁷²Co

Niver mas	72
niver a neutron	45
Relative Atomic Mass	71,956736 ± 0,000322 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	51,5 ± 0,3 ms
spin	6
nuclear quadrupole moment
time of discovery or invention	1992
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	4%
2n (2-neutron emission)

⁷³Co

Niver mas	73
niver a neutron	46
Relative Atomic Mass	72,959238 ± 0,000322 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	42 ± 0,8 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1995
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	6%
2n (2-neutron emission)

⁷⁴Co

Niver mas	74
niver a neutron	47
Relative Atomic Mass	73,963993 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	31,3 ± 1,3 ms
spin	7
nuclear quadrupole moment
time of discovery or invention	1995
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	18%
2n (2-neutron emission)

⁷⁵Co

Niver mas	75
niver a neutron	48
Relative Atomic Mass	74,967192 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	26,5 ± 1,2 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1995
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	16%
2n (2-neutron emission)

⁷⁶Co

Niver mas	76
niver a neutron	49
Relative Atomic Mass	75,972453 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	23 ± 6 ms
spin	8
nuclear quadrupole moment
time of discovery or invention	2010
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

⁷⁷Co

Niver mas	77
niver a neutron	50
Relative Atomic Mass	76,976479 ± 0,000644 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	15 ± 6 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	2014
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)
3n (3-neutron emission)

⁷⁸Co

Niver mas	78
niver a neutron	51
Relative Atomic Mass	77,983553 ± 0,000751 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention	2017
parity

decay mode	intensity
β⁻ (β⁻ decay)

istor

dizoloer pe ijiner	George Brandt
location of discovery	Sweden
time of discovery or invention	1739
Etimologiezh	German: kobold (goblin).
pronunciation	KO-bolt (saozneg)

mammenn

Abundance
Abundance in Earth's crust	25 mg/kg
natural abundance (meurvor)	0,00002 mg/L
natural abundance (human body)	0,000002 %
natural abundance (meteoroid)	0,059 %
natural abundance (Heol)	0,0004 %
Abundance in Universe	0,0003 %

Nuclear Screening Constants

1	s	0.6332
2	p	3.9076
2	s	7.595
3	d	15.1446
3	p	13.5654
3	s	12.6777
4	s	21.4236

Kobalt on ChemicalAid

AGROVOC ID	c_1702
Australian Educational Vocabulary ID	scot/3511
Brockhaus Enzyklopädie online ID	kobalt
CAB ID	105528
CA PROP 65 ID	cobalt-metal-powder
CAS Registry Number	7440-48-4
CPV Supplementary	AA16
Canadian Encyclopedia article ID	cobalt
ChEBI ID	27638
Common Procurement Vocabulary	14733000
DSSTOX compound identifier	DTXCID9011040
DSSTox substance ID	DTXSID1031040
DrugBank ID	14574
ECHA Substance Infocard ID	100.028.325
EuroVoc ID	6018
GEMET ID	1532
Golden ID	Cobalt-RGEZNX
Great Russian Encyclopedia Online ID	2075823
Grove Art Online ID	T2071458
HCIS ID	1033
HSDB ID	519
ICSC ID	0782
IEDB Epitope ID	114073
InChIKey	GUTLYIVDDKVIGB-UHFFFAOYSA-N
KBpedia ID	Cobalt
Latvian National Encyclopedia Online ID	112080
MeSH descriptor ID	D003035
NALT ID	27388
NDF-RT ID	N0000022936
NDL Authority ID	00566072
NKCR AUT ID	ph543047
National Library of Israel J9U ID	987007284052205171
OmegaWiki Defined Meaning	645
OpenAlex ID	C515602321
Probes And Drugs ID	PD094484
RxNorm ID	1310300
Spanish Cultural Heritage thesauri ID	materias/1010032
Spanish Vikidia ID	Cobalto
Store norske leksikon ID	kobolt
Treccani ID	cobalto
UK Parliament thesaurus ID	285732
UNII	3G0H8C9362
USGS Thesaurus ID	1433
WikiSkripta ID	30617
WordNet 3.1 Synset ID	14659468-n
Yle topic ID	18-14370
ZVG number	7270
anaouder BNCF	22939
anaouder BNF	119794179
anaouder Encyclopaedia Universalis	cobalt
anaouder Encyclopædia Britannica enlinenn	science/cobalt-chemical-element
anaouder Freebase	/m/025tkrf
anaouder GND	4070047-1
anaouder Levraoueg ar C'hendalc'h	sh85027513
anaouder Tezorus arz ha savouriezh	300221155
anaouder YSO	15221
kod anaout PSH	5779
pennad eus Vikidia e galleg	Cobalt

Kobalt (Co)

Physical Property

Chemical Property

other

Isotopes of Cobalt

47Co

48Co

49Co

50Co

51Co

52Co

53Co

54Co

55Co

56Co

57Co

58Co

59Co

60Co

61Co

62Co

63Co

64Co

65Co

66Co

67Co

68Co

69Co

70Co

71Co

72Co

73Co

74Co

75Co

76Co

77Co

78Co

istor

mammenn

Nuclear Screening Constants

⁴⁷Co

⁴⁸Co

⁴⁹Co

⁵⁰Co

⁵¹Co

⁵²Co

⁵³Co

⁵⁴Co

⁵⁵Co

⁵⁶Co

⁵⁷Co

⁵⁸Co

⁵⁹Co

⁶⁰Co

⁶¹Co

⁶²Co

⁶³Co

⁶⁴Co

⁶⁵Co

⁶⁶Co

⁶⁷Co

⁶⁸Co

⁶⁹Co

⁷⁰Co

⁷¹Co

⁷²Co

⁷³Co

⁷⁴Co

⁷⁵Co

⁷⁶Co

⁷⁷Co

⁷⁸Co