Cobalt

Cobalt (Co)

chemical element with symbol Co and atomic number 27
Atomic Number27
Atomic Weight58.933194
Rhif màs59
Group9
Period4
Blockd
Proton27 p+
Niwtron32 n0
Electron27 e-
Animated Bohr model of Co (Cobalt)

Nodwedd Ffisegol

Atomic Radius
135 pm
molar volume
covalent radius
111 pm
Metallic Radius
116 pm
ionic radius
58 pm
Crystal Radius
72 pm
Van der Waals radius
200 pm
density
8.86 g/cm³
Atomic Radii Of The Elements: Cobalt0102030405060708090100110120130140150160170180190200pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
742.7 kJ/mol
electron affinity
0.66225646 eV/particle
ionization energy
7.88101 eV/particle
ionization energy of Co (Cobalt)
enthalpy of vaporization
389.1 kJ/mol
enthalpy of fusion
15.48 kJ/mol
standard enthalpy of formation
426.7 kJ/mol
Electron
plisgyn yr electron2, 8, 15, 2
Bohr model: Co (Cobalt)
valence electron2
Lewis structure: Co (Cobalt)
trefn yr electronnau[Ar] 3d7 4s2
1s2 2s2 2p6 3s2 3p6 3d7 4s2
Enhanced Bohr model of Co (Cobalt)
Orbital Diagram of Co (Cobalt)
Cyflwr ocsidiad-3, -1, 0, 1, 2, 3, 4, 5
Electronegatifedd
1.88
Electrophilicity Index
1.2638504937543713 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
3,200.15 K
Melting Point
1,768.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Gray
appearancehard lustrous gray metal
Mynegrif plygiant
nodwedd ffisegol gwrthrych
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
dargludedd trydanol
17 MS/m
Gwrthedd
0.00000006000000000002 m Ω
superconductivity
magnetism
typeferromagnetic
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
1,394 K
Néel temperature
strwythur
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2.51 Å
Lattice Anglesπ/2, π/2, 2 π/3
nodwedd mecanyddol deunyddiau
hardness
5 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
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
space group194 (P63/mmc)

Isotopes of Cobalt

Stable Isotopes1
Unstable Isotopes31
Natural Isotopes1

47Co

Rhif màs47
neutron number20
relative atomic mass
47.011401 ± 0.000644 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin7/2
nuclear quadrupole moment
dyddiad darganfod
parity-

decay modeintensity
p (proton emission)

48Co

Rhif màs48
neutron number21
relative atomic mass
48.001857 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin6
nuclear quadrupole moment
dyddiad darganfod
parity+

decay modeintensity
p (proton emission)

49Co

Rhif màs49
neutron number22
relative atomic mass
48.989501 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin7/2
nuclear quadrupole moment
dyddiad darganfod
parity-

decay modeintensity
p (proton emission)

50Co

Rhif màs50
neutron number23
relative atomic mass
49.981117 ± 0.000135 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
38.8 ± 0.2 ms
spin6
nuclear quadrupole moment
dyddiad darganfod1987
parity+

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

51Co

Rhif màs51
neutron number24
relative atomic mass
50.970647 ± 0.000052 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
68.8 ± 1.9 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1987
parity-

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

52Co

Rhif màs52
neutron number25
relative atomic mass
51.963130224 ± 0.000005669 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
111.7 ± 2.1 ms
spin6
nuclear quadrupole moment
dyddiad darganfod1987
parity+

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

53Co

Rhif màs53
neutron number26
relative atomic mass
52.954203278 ± 0.000001854 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
244.6 ± 2.8 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1970
parity-

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

54Co

Rhif màs54
neutron number27
relative atomic mass
53.948459075 ± 0.00000038 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
193.27 ± 0.06 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1952
parity+

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

55Co

Rhif màs55
neutron number28
relative atomic mass
54.941996416 ± 0.000000434 Da
g-factor
1.3777142857143 ± 0.00085714285714286
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17.53 ± 0.03 h
spin7/2
nuclear quadrupole moment
dyddiad darganfod1938
parity-

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

56Co

Rhif màs56
neutron number29
relative atomic mass
55.939838032 ± 0.00000051 Da
g-factor
0.9625 ± 0.0025
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
77.236 ± 0.026 d
spin4
nuclear quadrupole moment
0.25 ± 0.09
dyddiad darganfod1941
parity+

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

57Co

Rhif màs57
neutron number30
relative atomic mass
56.936289819 ± 0.000000553 Da
g-factor
1.3485714285714 ± 0.0028571428571429
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
271.811 ± 0.032 d
spin7/2
nuclear quadrupole moment
0.54 ± 0.1
dyddiad darganfod1941
parity-

decay modeintensity
ϵ (electron capture)100%

58Co

Rhif màs58
neutron number31
relative atomic mass
57.935751292 ± 0.000001237 Da
g-factor
2.022 ± 0.004
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
70.844 ± 0.02 d
spin2
nuclear quadrupole moment
0.23 ± 0.03
dyddiad darganfod1941
parity+

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

59Co

Rhif màs59
neutron number32
relative atomic mass
58.933193524 ± 0.000000426 Da
g-factor
natural abundance
100
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
0.42 ± 0.03
dyddiad darganfod1923
parity-

60Co

Rhif màs60
neutron number33
relative atomic mass
59.933815536 ± 0.000000433 Da
g-factor
0.7598 ± 0.0016
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.2714 ± 0.0006 y
spin5
nuclear quadrupole moment
0.46 ± 0.06
dyddiad darganfod1941
parity+

decay modeintensity
β (β decay)100%

61Co

Rhif màs61
neutron number34
relative atomic mass
60.932476031 ± 0.000000901 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.649 ± 0.005 h
spin7/2
nuclear quadrupole moment
dyddiad darganfod1947
parity-

decay modeintensity
β (β decay)100%

62Co

Rhif màs62
neutron number35
relative atomic mass
61.934058198 ± 0.00001994 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.54 ± 0.1 m
spin2
nuclear quadrupole moment
dyddiad darganfod1949
parity

decay modeintensity
β (β decay)100%

63Co

Rhif màs63
neutron number36
relative atomic mass
62.93359963 ± 0.000019941 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
26.9 ± 0.4 s
spin7/2
nuclear quadrupole moment
dyddiad darganfod1960
parity-

decay modeintensity
β (β decay)100%

64Co

Rhif màs64
neutron number37
relative atomic mass
63.935810176 ± 0.000021476 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
300 ± 30 ms
spin1
nuclear quadrupole moment
dyddiad darganfod1969
parity+

decay modeintensity
β (β decay)100%

65Co

Rhif màs65
neutron number38
relative atomic mass
64.936462071 ± 0.000002235 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.16 ± 0.03 s
spin7/2
nuclear quadrupole moment
dyddiad darganfod1978
parity

decay modeintensity
β (β decay)100%

66Co

Rhif màs66
neutron number39
relative atomic mass
65.939442943 ± 0.000015 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
194 ± 17 ms
spin1
nuclear quadrupole moment
dyddiad darganfod1985
parity+

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

67Co

Rhif màs67
neutron number40
relative atomic mass
66.940609625 ± 0.000006917 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
329 ± 28 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1985
parity-

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

68Co

Rhif màs68
neutron number41
relative atomic mass
67.944559401 ± 0.000004142 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
200 ± 20 ms
spin7
nuclear quadrupole moment
dyddiad darganfod1985
parity-

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

69Co

Rhif màs69
neutron number42
relative atomic mass
68.945909 ± 0.000092 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
180 ± 20 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1985
parity-

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

70Co

Rhif màs70
neutron number43
relative atomic mass
69.9500534 ± 0.0000118 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
508 ± 7 ms
spin1
nuclear quadrupole moment
dyddiad darganfod1998
parity+

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

71Co

Rhif màs71
neutron number44
relative atomic mass
70.952366923 ± 0.00049923 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
80 ± 3 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1992
parity-

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

72Co

Rhif màs72
neutron number45
relative atomic mass
71.956736 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
51.5 ± 0.3 ms
spin6
nuclear quadrupole moment
dyddiad darganfod1992
parity-

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

73Co

Rhif màs73
neutron number46
relative atomic mass
72.959238 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
42 ± 0.8 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1995
parity-

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

74Co

Rhif màs74
neutron number47
relative atomic mass
73.963993 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
31.3 ± 1.3 ms
spin7
nuclear quadrupole moment
dyddiad darganfod1995
parity-

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

75Co

Rhif màs75
neutron number48
relative atomic mass
74.967192 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
26.5 ± 1.2 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1995
parity-

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

76Co

Rhif màs76
neutron number49
relative atomic mass
75.972453 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
23 ± 6 ms
spin8
nuclear quadrupole moment
dyddiad darganfod2010
parity-

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

77Co

Rhif màs77
neutron number50
relative atomic mass
76.976479 ± 0.000644 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
15 ± 6 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod2014
parity-

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

78Co

Rhif màs78
neutron number51
relative atomic mass
77.983553 ± 0.000751 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod2017
parity

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

hanes

darganfyddwr neu ddyfeisiwrGeorge Brandt
man darganfodSweden
dyddiad darganfod1739
geirdarddiadGerman: kobold (goblin).
ynganiadKO-bolt (Saesneg)

source

Abundance
Abundance in Earth's crust
natural abundance (cefnfor)
0.00002 mg/L
natural abundance (corff dynol)
0.000002 %
natural abundance (Awyrfaen)
0.059 %
natural abundance (Haul)
0.0004 %
Abundance in Universe
0.0003 %

Nuclear Screening Constants

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