Technetium (Tc)

chemical element with symbol Tc and atomic number 43

Atomic Number	43
Atomic Weight	97.90721
mass number	83

Group	7
Period	5
Block	d

proton	43 p⁺
Neutron	40 n⁰
Elektron	43 e^-

Physical Property

Atomic Radius	135 pm 252 pm
molar volume	8,5 cm³/mol
Covalent Radius	128 pm 120 pm 110 pm 147 pm
Metallic Radius	127 pm 136 pm
ionic radius	64,5 pm 60 pm 37 pm 56 pm
Crystal Radius	78,5 pm 74 pm 51 pm 70 pm
Van der Waals radius	205 pm 216 pm 236 pm 299,8 pm
density	11 g/cm³

Chemical Property

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orka

proton affinity
electron affinity	0,55 eV/particle
ionization energy	7,119381 eV/particle 15,26 eV/particle 29,55 eV/particle 41 eV/particle 57 eV/particle 72 eV/particle 88 eV/particle 150 eV/particle 169 eV/particle 189,9 eV/particle 214 eV/particle 239 eV/particle 262,08 eV/particle 311 eV/particle 338,55 eV/particle 604 eV/particle 655 eV/particle 713 eV/particle 773 eV/particle 829 eV/particle 904 eV/particle 968 eV/particle 1.032 eV/particle 1.102 eV/particle 1.166 eV/particle 1.354 eV/particle 1.411,6 eV/particle 1.479,5 eV/particle 1.559 eV/particle 1.638 eV/particle 1.689 eV/particle 1.838 eV/particle 1.900,28 eV/particle 4.505 eV/particle 4.681 eV/particle 4.874 eV/particle 5.060 eV/particle 5.361 eV/particle 5.570 eV/particle 5.838 eV/particle 6.008,391 eV/particle 25.004,532 eV/particle 25.786,99 eV/particle

enthalpy of vaporization	585 kJ/mol
enthalpy of fusion	23,8 kJ/mol
standard enthalpy of formation	678 kJ/mol
Elektron

electron shell	2, 8, 18, 13, 2

valence electron	2 ⓘ

electron configuration	[Kr] 4d⁵ 5s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 4d⁵ 5s²

oxidation number	-3, -1, 0, 1, 2, 3, 4, 5, 6, 7
electronegativity	8,94 eV/particle 0.1344592 2.1
Electrophilicity Index	1,1191961031633155 eV/particle
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	4.535,15 K
Melting Point	2.430,15 K
critical pressure
critical temperature
triple point
appearance
litur	Black #ff1493 #3b9e9e #3b9e9e
appearance	shiny 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
type	Conductor
electrical conductivity	5 MS/m
electrical resistivity	0,0000002 Ω*m
superconductivity	7,7 K
magnetism
type	paramagnetic
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
bygnaður
Crystal Structure	{ERROR}
lattice constant	2,74 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
Category	Actinides, Transition metals
CAS Group	VIIA
IUPAC Group	VIIB
Glawe Number	59
Mendeleev Number	56
Pettifor Number	58
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	79 ± 10 a₀
C6 Dispersion Coefficient	939 a₀
allotrope
Neutron cross section	22
Neutron Mass Absorption
quantum number	6S5/2
space group	194 (P63/mmc)

Isotopes of Technetium

Stable Isotopes	0
Unstable Isotopes	40
Natural Isotopes	0

⁸³Tc

mass number	83
neutron number	40
Relative Atomic Mass	82,966377 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention
parity	-

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

⁸⁴Tc

mass number	84
neutron number	41
Relative Atomic Mass	83,959527 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	1
nuclear quadrupole moment
time of discovery or invention
parity	+

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

⁸⁵Tc

mass number	85
neutron number	42
Relative Atomic Mass	84,950778 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention
parity	-

decay mode	intensity
p (proton emission)

⁸⁶Tc

mass number	86
neutron number	43
Relative Atomic Mass	85,944637 ± 0,000322 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	55 ± 7 ms
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1992
parity	+

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

⁸⁷Tc

mass number	87
neutron number	44
Relative Atomic Mass	86,938067185 ± 0,0000045 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	2,14 ± 0,17 s
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1991
parity	+

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

⁸⁸Tc

mass number	88
neutron number	45
Relative Atomic Mass	87,933794211 ± 0,0000044 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	6,4 ± 0,8 s
spin	2
nuclear quadrupole moment
time of discovery or invention	1991
parity	+

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

⁸⁹Tc

mass number	89
neutron number	46
Relative Atomic Mass	88,927648649 ± 0,0000041 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	12,8 ± 0,9 s
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1991
parity	+

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

⁹⁰Tc

mass number	90
neutron number	47
Relative Atomic Mass	89,924073919 ± 0,0000011 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	49,2 ± 0,4 s
spin	8
nuclear quadrupole moment
time of discovery or invention	1974
parity	+

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

⁹¹Tc

mass number	91
neutron number	48
Relative Atomic Mass	90,918424972 ± 0,000002536 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	3,14 ± 0,02 m
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1974
parity

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

⁹²Tc

mass number	92
neutron number	49
Relative Atomic Mass	91,915269777 ± 0,00000333 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	4,25 ± 0,15 m
spin	8
nuclear quadrupole moment
time of discovery or invention	1964
parity

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

⁹³Tc

mass number	93
neutron number	50
Relative Atomic Mass	92,910245147 ± 0,000001086 Da
g-factor	1,4044444444444 ± 0,013333333333333
natural abundance
radioactivity	☢️ radioactive element
half-life	2,75 ± 0,05 h
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1948
parity	+

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

⁹⁴Tc

mass number	94
neutron number	51
Relative Atomic Mass	93,909652319 ± 0,00000437 Da
g-factor	0,73142857142857 ± 0,0071428571428571
natural abundance
radioactivity	☢️ radioactive element
half-life	293 ± 1 m
spin	7
nuclear quadrupole moment
time of discovery or invention	1948
parity	+

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

⁹⁵Tc

mass number	95
neutron number	52
Relative Atomic Mass	94,907652281 ± 0,000005453 Da
g-factor	1,32 ± 0,013333333333333
natural abundance
radioactivity	☢️ radioactive element
half-life	19,258 ± 0,026 h
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1947
parity	+

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

⁹⁶Tc

mass number	96
neutron number	53
Relative Atomic Mass	95,907866675 ± 0,000005524 Da
g-factor	0,72714285714286 ± 0,0071428571428571
natural abundance
radioactivity	☢️ radioactive element
half-life	4,28 ± 0,07 d
spin	7
nuclear quadrupole moment
time of discovery or invention	1947
parity	+

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

⁹⁷Tc

mass number	97
neutron number	54
Relative Atomic Mass	96,90636072 ± 0,00000442 Da
g-factor	1,2933333333333 ± 0,02
natural abundance
radioactivity	☢️ radioactive element
half-life	4,21 ± 0,16 My
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1946
parity	+

decay mode	intensity
ϵ (electron capture)	100%

⁹⁸Tc

mass number	98
neutron number	55
Relative Atomic Mass	97,907211206 ± 0,000003628 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	4,2 ± 0,3 My
spin	6
nuclear quadrupole moment
time of discovery or invention	1955
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0%

⁹⁹Tc

mass number	99
neutron number	56
Relative Atomic Mass	98,906249681 ± 0,000000974 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	211,1 ± 1,2 ky
spin	9/2
nuclear quadrupole moment	−0,129 ± 0,006
time of discovery or invention	1938
parity	+

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

¹⁰⁰Tc

mass number	100
neutron number	57
Relative Atomic Mass	99,907652715 ± 0,00000145 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	15,46 ± 0,19 s
spin	1
nuclear quadrupole moment
time of discovery or invention	1952
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
ϵ (electron capture)	0.0018%

¹⁰¹Tc

mass number	101
neutron number	58
Relative Atomic Mass	100,907305271 ± 0,000025768 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	14,22 ± 0,01 m
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1941
parity	+

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

¹⁰²Tc

mass number	102
neutron number	59
Relative Atomic Mass	101,909207239 ± 0,00000984 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	5,28 ± 0,15 s
spin	1
nuclear quadrupole moment
time of discovery or invention	1954
parity	+

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

¹⁰³Tc

mass number	103
neutron number	60
Relative Atomic Mass	102,90917396 ± 0,000010531 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	54,2 ± 0,8 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1957
parity	+

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

¹⁰⁴Tc

mass number	104
neutron number	61
Relative Atomic Mass	103,911433718 ± 0,000026716 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	18,3 ± 0,3 m
spin	3
nuclear quadrupole moment
time of discovery or invention	1956
parity	-

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

¹⁰⁵Tc

mass number	105
neutron number	62
Relative Atomic Mass	104,911662024 ± 0,000037856 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	7,64 ± 0,06 m
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1955
parity	-

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

¹⁰⁶Tc

mass number	106
neutron number	63
Relative Atomic Mass	105,914356674 ± 0,00001315 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	35,6 ± 0,6 s
spin	1
nuclear quadrupole moment
time of discovery or invention	1965
parity

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

¹⁰⁷Tc

mass number	107
neutron number	64
Relative Atomic Mass	106,915458437 ± 0,00000931 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	21,2 ± 0,2 s
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1965
parity	-

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

¹⁰⁸Tc

mass number	108
neutron number	65
Relative Atomic Mass	107,918493493 ± 0,000009413 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	5,17 ± 0,07 s
spin	2
nuclear quadrupole moment
time of discovery or invention	1970
parity

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

¹⁰⁹Tc

mass number	109
neutron number	66
Relative Atomic Mass	108,920254107 ± 0,00001038 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	905 ± 21 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1976
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.08%

¹¹⁰Tc

mass number	110
neutron number	67
Relative Atomic Mass	109,923741263 ± 0,000010195 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	900 ± 13 ms
spin	2
nuclear quadrupole moment
time of discovery or invention	1976
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.04%

¹¹¹Tc

mass number	111
neutron number	68
Relative Atomic Mass	110,925898966 ± 0,000011359 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	350 ± 11 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1988
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.85%

¹¹²Tc

mass number	112
neutron number	69
Relative Atomic Mass	111,929941658 ± 0,00000592 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	323 ± 6 ms
spin	2
nuclear quadrupole moment
time of discovery or invention	1990
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.5%

¹¹³Tc

mass number	113
neutron number	70
Relative Atomic Mass	112,932569032 ± 0,0000036 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	152 ± 8 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1992
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2.1%

¹¹⁴Tc

mass number	114
neutron number	71
Relative Atomic Mass	113,93709 ± 0,000465 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	121 ± 9 ms
spin	5
nuclear quadrupole moment
time of discovery or invention	1994
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.3%

¹¹⁵Tc

mass number	115
neutron number	72
Relative Atomic Mass	114,9401 ± 0,00021 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	78 ± 2 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1994
parity	+

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

¹¹⁶Tc

mass number	116
neutron number	73
Relative Atomic Mass	115,94502 ± 0,00032 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	57 ± 3 ms
spin	2
nuclear quadrupole moment
time of discovery or invention	1997
parity	+

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

¹¹⁷Tc

mass number	117
neutron number	74
Relative Atomic Mass	116,94832 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	44,5 ± 3 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1997
parity	+

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

¹¹⁸Tc

mass number	118
neutron number	75
Relative Atomic Mass	117,953526 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	30 ± 4 ms
spin	2
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)

¹¹⁹Tc

mass number	119
neutron number	76
Relative Atomic Mass	118,956876 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	22 ± 3 ms
spin	5/2
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)

¹²⁰Tc

mass number	120
neutron number	77
Relative Atomic Mass	119,962426 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	21 ± 5 ms
spin	3
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)

¹²¹Tc

mass number	121
neutron number	78
Relative Atomic Mass	120,96614 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	22 ± 6 ms
spin	5/2
nuclear quadrupole moment
time of discovery or invention	2015
parity	+

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

¹²²Tc

mass number	122
neutron number	79
Relative Atomic Mass	121,97176 ± 0,000322 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	1
nuclear quadrupole moment
time of discovery or invention	2018
parity	+

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

søga

discoverer or inventor	Carlo Perrier, Émillo Segrè
location of discovery	Italy
time of discovery or invention	1937
etymology	Greek: technêtos (artificial).
pronunciation	tek-NEE-shi-em (enskt)

source

Abundance
Abundance in Earth's crust
natural abundance (hav)
natural abundance (human body)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Sólin)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

1	s	0.891
2	p	4.0592
2	s	11.3718
3	d	14.647
3	p	16.6159
3	s	16.2088
4	d	30.118
4	p	27.1888
4	s	25.8016
5	s	35.7735

Technetium on ChemicalAid

technetium

Technetium (Tc)

Physical Property

Chemical Property

other

Isotopes of Technetium

83Tc

84Tc

85Tc

86Tc

87Tc

88Tc

89Tc

90Tc

91Tc

92Tc

93Tc

94Tc

95Tc

96Tc

97Tc

98Tc

99Tc

100Tc

101Tc

102Tc

103Tc

104Tc

105Tc

106Tc

107Tc

108Tc

109Tc

110Tc

111Tc

112Tc

113Tc

114Tc

115Tc

116Tc

117Tc

118Tc

119Tc

120Tc

121Tc

122Tc

søga

source

Nuclear Screening Constants

⁸³Tc

⁸⁴Tc

⁸⁵Tc

⁸⁶Tc

⁸⁷Tc

⁸⁸Tc

⁸⁹Tc

⁹⁰Tc

⁹¹Tc

⁹²Tc

⁹³Tc

⁹⁴Tc

⁹⁵Tc

⁹⁶Tc

⁹⁷Tc

⁹⁸Tc

⁹⁹Tc

¹⁰⁰Tc

¹⁰¹Tc

¹⁰²Tc

¹⁰³Tc

¹⁰⁴Tc

¹⁰⁵Tc

¹⁰⁶Tc

¹⁰⁷Tc

¹⁰⁸Tc

¹⁰⁹Tc

¹¹⁰Tc

¹¹¹Tc

¹¹²Tc

¹¹³Tc

¹¹⁴Tc

¹¹⁵Tc

¹¹⁶Tc

¹¹⁷Tc

¹¹⁸Tc

¹¹⁹Tc

¹²⁰Tc

¹²¹Tc

¹²²Tc