Kobalt

Kobalt (Co)

chemical element with symbol Co and atomic number 27
Atomic Number27
Atomic Weight58.933194
Massagetal59
Group9
Period4
Blockd
proton27 p+
neutron32 n0
elektron27 e-
Animated Bohr model of Co (Kobalt)

Physical Property

Atoomradius
135 pm
molar volume
Covalent Radius
111 pm
Metallic Radius
116 pm
Ioonradius
58 pm
Crystal Radius
72 pm
Van der Waals radius
200 pm
density
8,86 g/cm³
Atomic Radii Of The Elements: Kobalt020406080100120140160180200pmAtoomradiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energie
proton affinity
742,7 kJ/mol
electron affinity
0,66225646 eV/particle
ionization energy
7,88101 eV/particle
ionization energy of Co (Kobalt)
Verdampingswarmte
389,1 kJ/mol
smeltingswarmte
15,48 kJ/mol
Vormingsentalpie
426,7 kJ/mol
elektron
Elektronskil2, 8, 15, 2
Bohr model: Co (Kobalt)
Valenselektrone2
Lewisteorie: Co (Kobalt)
elektronkonfigurasie[Ar] 3d7 4s2
1s2 2s2 2p6 3s2 3p6 3d7 4s2
Enhanced Bohr model of Co (Kobalt)
Orbital Diagram of Co (Kobalt)
Oksidasietoestand-3, -1, 0, 1, 2, 3, 4, 5
Elektronegatiwiteit
1.88
Electrophilicity Index
1,2638504937543713 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
3 200,15 K
Melting Point
1 768,15 K
critical pressure
critical temperature
triple point
appearance
kleur
Gray
appearancehard lustrous gray metal
Brekingsindeks
thermodynamic material property
Thermal Conductivity
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
typeConductor
Geleidingsvermoë
17 MS/m
Elektriese resistiwiteit
0,00000006000000000002 m Ω
superconductivity
Magnetisme
typeferromagnetic
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
1 394 K
Néel temperature
structure
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2,51 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
5 MPa
Massamodulus
180 GPa
Skuifmodulus
75 GPa
Young se modulus
209 GPa
Poisson se verhouding
0,31
Spoed van klank
4 720 m/s
classification
CategoryTransition metals, Transition metals
CAS GroupVIIIA
IUPAC GroupVIII
Glawe Number70
Mendeleev Number63
Pettifor Number64
Geochemical Classfirst series transition metal
Goldschmidt classificationsiderophile

other

Gas Basicity
719,8 kJ/mol
polarizability
55 ± 4 a₀
C6 Dispersion Coefficient
408 a₀
allotrope
Neutron cross section
37,2
Neutron Mass Absorption
0,021
quantum number4F9/2
Ruimtegroep194 (P63/mmc)

Isotopes of Cobalt

Stable Isotopes1
Unstable Isotopes31
Natural Isotopes1

47Co

Massagetal47
neutron number20
relative atomic mass
47,011401 ± 0,000644 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin7/2
nuclear quadrupole moment
ontdekkingsdatum
parity-

decay modeintensity
p (proton emission)

48Co

Massagetal48
neutron number21
relative atomic mass
48,001857 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin6
nuclear quadrupole moment
ontdekkingsdatum
parity+

decay modeintensity
p (proton emission)

49Co

Massagetal49
neutron number22
relative atomic mass
48,989501 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin7/2
nuclear quadrupole moment
ontdekkingsdatum
parity-

decay modeintensity
p (proton emission)

50Co

Massagetal50
neutron number23
relative atomic mass
49,981117 ± 0,000135 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
38,8 ± 0,2 ms
spin6
nuclear quadrupole moment
ontdekkingsdatum1987
parity+

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

51Co

Massagetal51
neutron number24
relative atomic mass
50,970647 ± 0,000052 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
68,8 ± 1,9 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1987
parity-

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

52Co

Massagetal52
neutron number25
relative atomic mass
51,963130224 ± 0,000005669 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
111,7 ± 2,1 ms
spin6
nuclear quadrupole moment
ontdekkingsdatum1987
parity+

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

53Co

Massagetal53
neutron number26
relative atomic mass
52,954203278 ± 0,000001854 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
244,6 ± 2,8 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1970
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

54Co

Massagetal54
neutron number27
relative atomic mass
53,948459075 ± 0,00000038 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
193,27 ± 0,06 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1952
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

55Co

Massagetal55
neutron number28
relative atomic mass
54,941996416 ± 0,000000434 Da
g-factor
1,3777142857143 ± 0,00085714285714286
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
17,53 ± 0,03 h
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1938
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

56Co

Massagetal56
neutron number29
relative atomic mass
55,939838032 ± 0,00000051 Da
g-factor
0,9625 ± 0,0025
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
77,236 ± 0,026 d
spin4
nuclear quadrupole moment
0,25 ± 0,09
ontdekkingsdatum1941
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

57Co

Massagetal57
neutron number30
relative atomic mass
56,936289819 ± 0,000000553 Da
g-factor
1,3485714285714 ± 0,0028571428571429
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
271,811 ± 0,032 d
spin7/2
nuclear quadrupole moment
0,54 ± 0,1
ontdekkingsdatum1941
parity-

decay modeintensity
ϵ (electron capture)100%

58Co

Massagetal58
neutron number31
relative atomic mass
57,935751292 ± 0,000001237 Da
g-factor
2,022 ± 0,004
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
70,844 ± 0,02 d
spin2
nuclear quadrupole moment
0,23 ± 0,03
ontdekkingsdatum1941
parity+

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

59Co

Massagetal59
neutron number32
relative atomic mass
58,933193524 ± 0,000000426 Da
g-factor
natural abundance
100
radioaktiwiteitStabiele isotoop
HalfleeftydNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
0,42 ± 0,03
ontdekkingsdatum1923
parity-

60Co

Massagetal60
neutron number33
relative atomic mass
59,933815536 ± 0,000000433 Da
g-factor
0,7598 ± 0,0016
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
5,2714 ± 0,0006 y
spin5
nuclear quadrupole moment
0,46 ± 0,06
ontdekkingsdatum1941
parity+

decay modeintensity
β (β decay)100%

61Co

Massagetal61
neutron number34
relative atomic mass
60,932476031 ± 0,000000901 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,649 ± 0,005 h
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1947
parity-

decay modeintensity
β (β decay)100%

62Co

Massagetal62
neutron number35
relative atomic mass
61,934058198 ± 0,00001994 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,54 ± 0,1 m
spin2
nuclear quadrupole moment
ontdekkingsdatum1949
parity

decay modeintensity
β (β decay)100%

63Co

Massagetal63
neutron number36
relative atomic mass
62,93359963 ± 0,000019941 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
26,9 ± 0,4 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1960
parity-

decay modeintensity
β (β decay)100%

64Co

Massagetal64
neutron number37
relative atomic mass
63,935810176 ± 0,000021476 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
300 ± 30 ms
spin1
nuclear quadrupole moment
ontdekkingsdatum1969
parity+

decay modeintensity
β (β decay)100%

65Co

Massagetal65
neutron number38
relative atomic mass
64,936462071 ± 0,000002235 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,16 ± 0,03 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1978
parity

decay modeintensity
β (β decay)100%

66Co

Massagetal66
neutron number39
relative atomic mass
65,939442943 ± 0,000015 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
194 ± 17 ms
spin1
nuclear quadrupole moment
ontdekkingsdatum1985
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

67Co

Massagetal67
neutron number40
relative atomic mass
66,940609625 ± 0,000006917 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
329 ± 28 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1985
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

68Co

Massagetal68
neutron number41
relative atomic mass
67,944559401 ± 0,000004142 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
200 ± 20 ms
spin7
nuclear quadrupole moment
ontdekkingsdatum1985
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

69Co

Massagetal69
neutron number42
relative atomic mass
68,945909 ± 0,000092 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
180 ± 20 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1985
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

70Co

Massagetal70
neutron number43
relative atomic mass
69,9500534 ± 0,0000118 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
508 ± 7 ms
spin1
nuclear quadrupole moment
ontdekkingsdatum1998
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

71Co

Massagetal71
neutron number44
relative atomic mass
70,952366923 ± 0,00049923 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
80 ± 3 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1992
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)3%

72Co

Massagetal72
neutron number45
relative atomic mass
71,956736 ± 0,000322 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
51,5 ± 0,3 ms
spin6
nuclear quadrupole moment
ontdekkingsdatum1992
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)4%
2n (2-neutron emission)

73Co

Massagetal73
neutron number46
relative atomic mass
72,959238 ± 0,000322 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
42 ± 0,8 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1995
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)6%
2n (2-neutron emission)

74Co

Massagetal74
neutron number47
relative atomic mass
73,963993 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
31,3 ± 1,3 ms
spin7
nuclear quadrupole moment
ontdekkingsdatum1995
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)18%
2n (2-neutron emission)

75Co

Massagetal75
neutron number48
relative atomic mass
74,967192 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
26,5 ± 1,2 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1995
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)16%
2n (2-neutron emission)

76Co

Massagetal76
neutron number49
relative atomic mass
75,972453 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
23 ± 6 ms
spin8
nuclear quadrupole moment
ontdekkingsdatum2010
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

77Co

Massagetal77
neutron number50
relative atomic mass
76,976479 ± 0,000644 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
15 ± 6 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum2014
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)
3n (3-neutron emission)

78Co

Massagetal78
neutron number51
relative atomic mass
77,983553 ± 0,000751 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum2017
parity

decay modeintensity
β (β decay)
Kobalt electrolytic and 1cm3 cube

geskiedenis

Ontdek deurGeorge Brandt
ligging van ontdekkingSweden
ontdekkingsdatum1739
etimologieGerman: kobold (goblin).
uitspraakKO-bolt (Engels)

source

Abundance
Abundance in Earth's crust
natural abundance (oseaan)
0,00002 mg/L
natural abundance (human body)
0,000002 %
natural abundance (Meteoroïde)
0,059 %
natural abundance (Son)
0,0004 %
Abundance in Universe
0,0003 %

Nuclear Screening Constants

1s0.6332
2p3.9076
2s7.595
3d15.1446
3p13.5654
3s12.6777
4s21.4236