Technetium

Technetium (Tc)

chemical element with symbol Tc and atomic number 43
Atomic Number43
Atomic Weight97.90721
mass number83
Group7
Period5
Blockd
proton43 p+
neutron40 n0
electron43 e-
Animated Bohr model of Tc (Technetium)

Physical Property

Atomic Radius
135 pm
molar volume
Covalent Radius
128 pm
Metallic Radius
127 pm
ionic radius
64.5 pm
Crystal Radius
78.5 pm
Van der Waals radius
216 pm
density
Atomic Radii Of The Elements: Technetium0102030405060708090100110120130140150160170180190200210220pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energia
proton affinity
electron affinity
ionization energy
7.119381 eV/particle
ionization energy of Tc (Technetium)
enthalpy of vaporization
585 kJ/mol
enthalpy of fusion
23.8 kJ/mol
standard enthalpy of formation
678 kJ/mol
electron
Tegimen electronicum2, 8, 18, 13, 2
Bohr model: Tc (Technetium)
valence electron2
Lewis structure: Tc (Technetium)
electron configuration[Kr] 4d5 5s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d5 5s2
Enhanced Bohr model of Tc (Technetium)
Orbital Diagram of Tc (Technetium)
oxidation number-3, -1, 0, 1, 2, 3, 4, 5, 6, 7
electronegativity
2.1
Electrophilicity Index
1.1191961031633155 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
4535.15 K
Melting Point
2430.15 K
critical pressure
critical temperature
Punctum triplex
appearance
Color
Silver
appearanceshiny gray metal
refractive index
thermodynamic material property
Thermal Conductivity
50.6 W/(m K)
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
5 MS/m
electrical resistivity
0.0000002 m Ω
Superconductrum
7.7 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000000342 m³/Kg
magnetic susceptibility (Molar)
0.000000003352 m³/mol
magnetic susceptibility (Volume)
0.0003933
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureSimple Hexagonal (HEX)
lattice constant
2.74 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
celeritas soni
classificare
CategoryTransition metals, Transition metals
CAS GroupVIIA
IUPAC GroupVIIB
Glawe Number59
Mendeleev Number56
Pettifor Number58
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
79 ± 10 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
22
Neutron Mass Absorption
quantum number6S5/2
space group194 (P63/mmc)

Isotopes of Technetium

Stable Isotopes0
Unstable Isotopes40
Natural Isotopes0

83Tc

mass number83
neutron number40
relative atomic mass
82.966377 ± 0.000537 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas1/2
nuclear quadrupole moment
0
repertus
parity-

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

84Tc

mass number84
neutron number41
relative atomic mass
83.959527 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas1
nuclear quadrupole moment
repertus
parity+

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

85Tc

mass number85
neutron number42
relative atomic mass
84.950778 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas1/2
nuclear quadrupole moment
0
repertus
parity-

decay modeintensity
p (proton emission)

86Tc

mass number86
neutron number43
relative atomic mass
85.944637 ± 0.000322 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
55 ± 7 ms
Volubilitas0
nuclear quadrupole moment
0
repertus1992
parity+

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

87Tc

mass number87
neutron number44
relative atomic mass
86.938067185 ± 0.0000045 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
2.14 ± 0.17 s
Volubilitas9/2
nuclear quadrupole moment
repertus1991
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.7%

88Tc

mass number88
neutron number45
relative atomic mass
87.933794211 ± 0.0000044 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
6.4 ± 0.8 s
Volubilitas2
nuclear quadrupole moment
repertus1991
parity+

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

89Tc

mass number89
neutron number46
relative atomic mass
88.927648649 ± 0.0000041 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
12.8 ± 0.9 s
Volubilitas9/2
nuclear quadrupole moment
repertus1991
parity+

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

90Tc

mass number90
neutron number47
relative atomic mass
89.924073919 ± 0.0000011 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
49.2 ± 0.4 s
Volubilitas8
nuclear quadrupole moment
repertus1974
parity+

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

91Tc

mass number91
neutron number48
relative atomic mass
90.918424972 ± 0.000002536 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
3.14 ± 0.02 m
Volubilitas9/2
nuclear quadrupole moment
repertus1974
parity

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

92Tc

mass number92
neutron number49
relative atomic mass
91.915269777 ± 0.00000333 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
4.25 ± 0.15 m
Volubilitas8
nuclear quadrupole moment
repertus1964
parity

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

93Tc

mass number93
neutron number50
relative atomic mass
92.910245147 ± 0.000001086 Da
g-factor
1.4044444444444 ± 0.013333333333333
natural abundance
radioactivitas☢️ radioactive element
half-life
2.75 ± 0.05 h
Volubilitas9/2
nuclear quadrupole moment
repertus1948
parity+

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

94Tc

mass number94
neutron number51
relative atomic mass
93.909652319 ± 0.00000437 Da
g-factor
0.73142857142857 ± 0.0071428571428571
natural abundance
radioactivitas☢️ radioactive element
half-life
293 ± 1 m
Volubilitas7
nuclear quadrupole moment
repertus1948
parity+

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

95Tc

mass number95
neutron number52
relative atomic mass
94.907652281 ± 0.000005453 Da
g-factor
1.32 ± 0.013333333333333
natural abundance
radioactivitas☢️ radioactive element
half-life
19.258 ± 0.026 h
Volubilitas9/2
nuclear quadrupole moment
repertus1947
parity+

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

96Tc

mass number96
neutron number53
relative atomic mass
95.907866675 ± 0.000005524 Da
g-factor
0.72714285714286 ± 0.0071428571428571
natural abundance
radioactivitas☢️ radioactive element
half-life
4.28 ± 0.07 d
Volubilitas7
nuclear quadrupole moment
repertus1947
parity+

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

97Tc

mass number97
neutron number54
relative atomic mass
96.90636072 ± 0.00000442 Da
g-factor
1.2933333333333 ± 0.02
natural abundance
radioactivitas☢️ radioactive element
half-life
4.21 ± 0.16 My
Volubilitas9/2
nuclear quadrupole moment
repertus1946
parity+

decay modeintensity
ϵ (electron capture)100%

98Tc

mass number98
neutron number55
relative atomic mass
97.907211206 ± 0.000003628 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
4.2 ± 0.3 My
Volubilitas6
nuclear quadrupole moment
repertus1955
parity+

decay modeintensity
β (β decay)100%
β+ (β+ decay; β+ = ϵ + e+)0%

99Tc

mass number99
neutron number56
relative atomic mass
98.906249681 ± 0.000000974 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
211.1 ± 1.2 ky
Volubilitas9/2
nuclear quadrupole moment
-0.129 ± 0.006
repertus1938
parity+

decay modeintensity
β (β decay)100%

100Tc

mass number100
neutron number57
relative atomic mass
99.907652715 ± 0.00000145 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
15.46 ± 0.19 s
Volubilitas1
nuclear quadrupole moment
repertus1952
parity+

decay modeintensity
β (β decay)100%
ϵ (electron capture)0.0018%

101Tc

mass number101
neutron number58
relative atomic mass
100.907305271 ± 0.000025768 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
14.22 ± 0.01 m
Volubilitas9/2
nuclear quadrupole moment
repertus1941
parity+

decay modeintensity
β (β decay)100%

102Tc

mass number102
neutron number59
relative atomic mass
101.909207239 ± 0.00000984 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
5.28 ± 0.15 s
Volubilitas1
nuclear quadrupole moment
repertus1954
parity+

decay modeintensity
β (β decay)100%

103Tc

mass number103
neutron number60
relative atomic mass
102.90917396 ± 0.000010531 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
54.2 ± 0.8 s
Volubilitas5/2
nuclear quadrupole moment
repertus1957
parity+

decay modeintensity
β (β decay)100%

104Tc

mass number104
neutron number61
relative atomic mass
103.911433718 ± 0.000026716 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
18.3 ± 0.3 m
Volubilitas3
nuclear quadrupole moment
repertus1956
parity-

decay modeintensity
β (β decay)100%

105Tc

mass number105
neutron number62
relative atomic mass
104.911662024 ± 0.000037856 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
7.64 ± 0.06 m
Volubilitas3/2
nuclear quadrupole moment
repertus1955
parity-

decay modeintensity
β (β decay)100%

106Tc

mass number106
neutron number63
relative atomic mass
105.914356674 ± 0.00001315 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
35.6 ± 0.6 s
Volubilitas1
nuclear quadrupole moment
repertus1965
parity

decay modeintensity
β (β decay)100%

107Tc

mass number107
neutron number64
relative atomic mass
106.915458437 ± 0.00000931 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
21.2 ± 0.2 s
Volubilitas3/2
nuclear quadrupole moment
repertus1965
parity-

decay modeintensity
β (β decay)100%

108Tc

mass number108
neutron number65
relative atomic mass
107.918493493 ± 0.000009413 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
5.17 ± 0.07 s
Volubilitas2
nuclear quadrupole moment
repertus1970
parity

decay modeintensity
β (β decay)100%

109Tc

mass number109
neutron number66
relative atomic mass
108.920254107 ± 0.00001038 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
905 ± 21 ms
Volubilitas5/2
nuclear quadrupole moment
repertus1976
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.08%

110Tc

mass number110
neutron number67
relative atomic mass
109.923741263 ± 0.000010195 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
900 ± 13 ms
Volubilitas2
nuclear quadrupole moment
repertus1976
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.04%

111Tc

mass number111
neutron number68
relative atomic mass
110.925898966 ± 0.000011359 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
350 ± 11 ms
Volubilitas5/2
nuclear quadrupole moment
repertus1988
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.85%

112Tc

mass number112
neutron number69
relative atomic mass
111.929941658 ± 0.00000592 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
323 ± 6 ms
Volubilitas2
nuclear quadrupole moment
repertus1990
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.5%

113Tc

mass number113
neutron number70
relative atomic mass
112.932569032 ± 0.0000036 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
152 ± 8 ms
Volubilitas5/2
nuclear quadrupole moment
repertus1992
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2.1%

114Tc

mass number114
neutron number71
relative atomic mass
113.93709 ± 0.000465 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
121 ± 9 ms
Volubilitas5
nuclear quadrupole moment
repertus1994
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.3%

115Tc

mass number115
neutron number72
relative atomic mass
114.9401 ± 0.00021 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
78 ± 2 ms
Volubilitas5/2
nuclear quadrupole moment
repertus1994
parity+

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

116Tc

mass number116
neutron number73
relative atomic mass
115.94502 ± 0.00032 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
57 ± 3 ms
Volubilitas2
nuclear quadrupole moment
repertus1997
parity+

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

117Tc

mass number117
neutron number74
relative atomic mass
116.94832 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
44.5 ± 3 ms
Volubilitas5/2
nuclear quadrupole moment
repertus1997
parity+

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

118Tc

mass number118
neutron number75
relative atomic mass
117.953526 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
30 ± 4 ms
Volubilitas2
nuclear quadrupole moment
repertus2010
parity+

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

119Tc

mass number119
neutron number76
relative atomic mass
118.956876 ± 0.000537 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
22 ± 3 ms
Volubilitas5/2
nuclear quadrupole moment
repertus2010
parity+

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

120Tc

mass number120
neutron number77
relative atomic mass
119.962426 ± 0.000537 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
21 ± 5 ms
Volubilitas3
nuclear quadrupole moment
repertus2010
parity+

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

121Tc

mass number121
neutron number78
relative atomic mass
120.96614 ± 0.000537 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
22 ± 6 ms
Volubilitas5/2
nuclear quadrupole moment
repertus2015
parity+

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

122Tc

mass number122
neutron number79
relative atomic mass
121.97176 ± 0.000322 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas1
nuclear quadrupole moment
repertus2018
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)
Technetium-sample
Electron shell 043 technetium

historia

inventorCarlo Perrier, Émillo Segrè
location of discoveryItaly
repertus1937
EtymologiaGreek: technêtos (artificial).
pronunciationtek-NEE-shi-em (English)

source

Abundance
Abundance in Earth's crust
natural abundance (Oceanus)
natural abundance (Corpus humanum)
0 %
natural abundance (Meteoroides)
0 %
natural abundance (Sol)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants

1s0.891
2p4.0592
2s11.3718
3d14.647
3p16.6159
3s16.2088
4d30.118
4p27.1888
4s25.8016
5s35.7735