Technetium (Tc)

Technetium is the 43rd element in the periodic table and has a symbol of Tc and atomic number of 43. It has an atomic weight of (97.90721) and a mass number of 83. Technetium has forty-three protons and forty neutrons in its nucleus, and forty-three electrons in five shells. It is located in group seven, period five and block d of the periodic table. Radioactive metallic transition element. Can be detected in some stars and the fission products of uranium. First made by Perrier and Segre by bombarding molybdenum with deutrons, giving them Tc-97. Tc-99 is the most stable isotope with a half-life of 2.6*10^6 years. Sixteen isotopes are known. Organic technetium compounds are used in bone imaging. Chemical properties are intermediate between rhenium and manganese.

Atomic Number	43
Atomic Weight	97.90721
Mass Number	83

Group	7
Period	5
Block	d

Protons	43 p⁺
Neutrons	40 n⁰
Electrons	43 e^-

Properties

Physical Properties
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
Energy
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

Heat of Vaporization	585 kJ/mol
Heat of Fusion	23.8 kJ/mol
Heat of Formation	678 kJ/mol
Electrons
Electron Shells	2, 8, 18, 13, 2

Valence Electrons	2
Electron Configuration	[Kr] 4d⁵ 5s²

Oxidation States	-3, -1, 0, 1, 2, 3, 4, 5, 6, 7
Electronegativity	8.94 eV/particle 0.1344592 2.1
Electrophilicity	1.1191961031633155 eV/particle
Phases
Phase	Solid
Gas Phase
Boiling Point	4,535.15 K
Melting Point	2,430.15 K
Critical Pressure
Critical Temperature
Triple Point
Visual
Technetium is a Silver. Tc has a CPK of #ff1493, Jmol of #3b9e9e, and MOLCAS GV of #3b9e9e. The Appearance of Element 43 is shiny gray metal.
Color	Silver #ff1493 #3b9e9e #3b9e9e
Appearance	shiny gray metal
Refractive Index
Thermodynamic Properties
Thermal Conductivity	50.6 W/(m K)
Thermal Expansion
Molar Heat Capacity
Specific Heat Capacity
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
Type	Conductor
Electrical Conductivity	5 MS/m
Electrical Resistivity	0.0000002 m Ω
Superconducting Point	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 Point
Neel Point
Structure
The Crystal Structure of Technetium is HEX. The lattice constant of Tc is 2.74 Å. The lattice angles of Element 43 are π/2, π/2, 2 π/3.
Crystal Structure	Simple Hexagonal (HEX)
Lattice Constant	2.74 Å
Lattice Angles	π/2, π/2, 2 π/3
Mechanical Properties

Hardness
Bulk Modulus
Shear Modulus
Young Modulus
Poisson Ratio
Speed of Sound
Classification
The CAS Group of Technetium is VIIA. The IUPAC Group of Tc is VIIB. The Glawe Number of Element 43 is 59. The Mendeleev Number of Technetium (Tc) is 56. The Pettifor Number of Technetium is 58. The Goldschmidt Class of Tc is synthetic.
Category	Transition metals, Transition metals
CAS Group	VIIA
IUPAC Group	VIIB
Glawe Number	59
Mendeleev Number	56
Pettifor Number	58
Geochemical Class
Goldschmidt Class	synthetic
Other
The Dipole Polarizability of Technetium is 79 plus or minus 10 a₀. Tc has a C6 Dispersion Coefficient (GB) of 939 a₀. The Allotropes of Element 43 is . The Neutron Cross Section of Technetium (Tc) is 22. The Quantum Numbers of Technetium is 6S5/2. The Space Group of Tc is 194 (P63/mmc).
Gas Basicity
Dipole Polarizability	79 ± 10 a₀
C6 Dispersion Coefficient	939 a₀
Allotropes
Neutron Cross Section	22
Neutron Mass Absorption
Quantum Numbers	6S5/2
Space Group	194 (P63/mmc)

Isotopes of Technetium

Stable Isotopes	0
Unstable Isotopes	40
Radioactive Isotopes	37

⁸³Tc

Abundance
Relative Atomic Mass	82.966377 ± 0.000537 Da
Mass Number	83
G-Factor
Half Life
Spin	1/2
Quadrupole Moment	0
Discovery Year
Parity	-

⁸³Tc Decay Modes

Decay Mode	Intensity
p (proton emission)	%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	%
β⁺ p (β⁺-delayed proton emission)	%

⁸⁴Tc

Abundance
Relative Atomic Mass	83.959527 ± 0.000429 Da
Mass Number	84
G-Factor
Half Life
Spin	1
Quadrupole Moment
Discovery Year
Parity	+

⁸⁴Tc Decay Modes

Decay Mode	Intensity
p (proton emission)	%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	%
β⁺ p (β⁺-delayed proton emission)	%

⁸⁵Tc

Abundance
Relative Atomic Mass	84.950778 ± 0.000429 Da
Mass Number	85
G-Factor
Half Life
Spin	1/2
Quadrupole Moment	0
Discovery Year
Parity	-

⁸⁵Tc Decay Modes

Decay Mode	Intensity
p (proton emission)	%

⁸⁶Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	85.944637 ± 0.000322 Da
Mass Number	86
G-Factor	0
Half Life	55 ± 7 ms
Spin	0
Quadrupole Moment	0
Discovery Year	1992
Parity	+

⁸⁶Tc Decay Modes

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

⁸⁷Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	86.938067185 ± 0.0000045 Da
Mass Number	87
G-Factor
Half Life	2.14 ± 0.17 s
Spin	9/2
Quadrupole Moment
Discovery Year	1991
Parity	+

⁸⁷Tc Decay Modes

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

⁸⁸Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	87.933794211 ± 0.0000044 Da
Mass Number	88
G-Factor
Half Life	6.4 ± 0.8 s
Spin	2
Quadrupole Moment
Discovery Year	1991
Parity	+

⁸⁸Tc Decay Modes

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

⁸⁹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	88.927648649 ± 0.0000041 Da
Mass Number	89
G-Factor
Half Life	12.8 ± 0.9 s
Spin	9/2
Quadrupole Moment
Discovery Year	1991
Parity	+

⁸⁹Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹⁰Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	89.924073919 ± 0.0000011 Da
Mass Number	90
G-Factor
Half Life	49.2 ± 0.4 s
Spin	8
Quadrupole Moment
Discovery Year	1974
Parity	+

⁹⁰Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹¹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	90.918424972 ± 0.000002536 Da
Mass Number	91
G-Factor
Half Life	3.14 ± 0.02 m
Spin	9/2
Quadrupole Moment
Discovery Year	1974
Parity

⁹¹Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹²Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	91.915269777 ± 0.00000333 Da
Mass Number	92
G-Factor
Half Life	4.25 ± 0.15 m
Spin	8
Quadrupole Moment
Discovery Year	1964
Parity

⁹²Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹³Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	92.910245147 ± 0.000001086 Da
Mass Number	93
G-Factor	1.4044444444444 ± 0.013333333333333
Half Life	2.75 ± 0.05 h
Spin	9/2
Quadrupole Moment
Discovery Year	1948
Parity	+

⁹³Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹⁴Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	93.909652319 ± 0.00000437 Da
Mass Number	94
G-Factor	0.73142857142857 ± 0.0071428571428571
Half Life	293 ± 1 m
Spin	7
Quadrupole Moment
Discovery Year	1948
Parity	+

⁹⁴Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹⁵Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	94.907652281 ± 0.000005453 Da
Mass Number	95
G-Factor	1.32 ± 0.013333333333333
Half Life	19.258 ± 0.026 h
Spin	9/2
Quadrupole Moment
Discovery Year	1947
Parity	+

⁹⁵Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹⁶Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	95.907866675 ± 0.000005524 Da
Mass Number	96
G-Factor	0.72714285714286 ± 0.0071428571428571
Half Life	4.28 ± 0.07 d
Spin	7
Quadrupole Moment
Discovery Year	1947
Parity	+

⁹⁶Tc Decay Modes

Decay Mode	Intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

⁹⁷Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	96.90636072 ± 0.00000442 Da
Mass Number	97
G-Factor	1.2933333333333 ± 0.02
Half Life	4.21 ± 0.16 My
Spin	9/2
Quadrupole Moment
Discovery Year	1946
Parity	+

⁹⁷Tc Decay Modes

Decay Mode	Intensity
ϵ (electron capture)	100%

⁹⁸Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	97.907211206 ± 0.000003628 Da
Mass Number	98
G-Factor
Half Life	4.2 ± 0.3 My
Spin	6
Quadrupole Moment
Discovery Year	1955
Parity	+

⁹⁸Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	0%

⁹⁹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	98.906249681 ± 0.000000974 Da
Mass Number	99
G-Factor
Half Life	211.1 ± 1.2 ky
Spin	9/2
Quadrupole Moment	-0.129 ± 0.006
Discovery Year	1938
Parity	+

⁹⁹Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁰Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	99.907652715 ± 0.00000145 Da
Mass Number	100
G-Factor
Half Life	15.46 ± 0.19 s
Spin	1
Quadrupole Moment
Discovery Year	1952
Parity	+

¹⁰⁰Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
ϵ (electron capture)	0.0018%

¹⁰¹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	100.907305271 ± 0.000025768 Da
Mass Number	101
G-Factor
Half Life	14.22 ± 0.01 m
Spin	9/2
Quadrupole Moment
Discovery Year	1941
Parity	+

¹⁰¹Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰²Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	101.909207239 ± 0.00000984 Da
Mass Number	102
G-Factor
Half Life	5.28 ± 0.15 s
Spin	1
Quadrupole Moment
Discovery Year	1954
Parity	+

¹⁰²Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰³Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	102.90917396 ± 0.000010531 Da
Mass Number	103
G-Factor
Half Life	54.2 ± 0.8 s
Spin	5/2
Quadrupole Moment
Discovery Year	1957
Parity	+

¹⁰³Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁴Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	103.911433718 ± 0.000026716 Da
Mass Number	104
G-Factor
Half Life	18.3 ± 0.3 m
Spin	3
Quadrupole Moment
Discovery Year	1956
Parity	-

¹⁰⁴Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁵Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	104.911662024 ± 0.000037856 Da
Mass Number	105
G-Factor
Half Life	7.64 ± 0.06 m
Spin	3/2
Quadrupole Moment
Discovery Year	1955
Parity	-

¹⁰⁵Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁶Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	105.914356674 ± 0.00001315 Da
Mass Number	106
G-Factor
Half Life	35.6 ± 0.6 s
Spin	1
Quadrupole Moment
Discovery Year	1965
Parity

¹⁰⁶Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁷Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	106.915458437 ± 0.00000931 Da
Mass Number	107
G-Factor
Half Life	21.2 ± 0.2 s
Spin	3/2
Quadrupole Moment
Discovery Year	1965
Parity	-

¹⁰⁷Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁸Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	107.918493493 ± 0.000009413 Da
Mass Number	108
G-Factor
Half Life	5.17 ± 0.07 s
Spin	2
Quadrupole Moment
Discovery Year	1970
Parity

¹⁰⁸Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%

¹⁰⁹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	108.920254107 ± 0.00001038 Da
Mass Number	109
G-Factor
Half Life	905 ± 21 ms
Spin	5/2
Quadrupole Moment
Discovery Year	1976
Parity	+

¹⁰⁹Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.08%

¹¹⁰Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	109.923741263 ± 0.000010195 Da
Mass Number	110
G-Factor
Half Life	900 ± 13 ms
Spin	2
Quadrupole Moment
Discovery Year	1976
Parity	+

¹¹⁰Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.04%

¹¹¹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	110.925898966 ± 0.000011359 Da
Mass Number	111
G-Factor
Half Life	350 ± 11 ms
Spin	5/2
Quadrupole Moment
Discovery Year	1988
Parity	+

¹¹¹Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.85%

¹¹²Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	111.929941658 ± 0.00000592 Da
Mass Number	112
G-Factor
Half Life	323 ± 6 ms
Spin	2
Quadrupole Moment
Discovery Year	1990
Parity	+

¹¹²Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.5%

¹¹³Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	112.932569032 ± 0.0000036 Da
Mass Number	113
G-Factor
Half Life	152 ± 8 ms
Spin	5/2
Quadrupole Moment
Discovery Year	1992
Parity	+

¹¹³Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2.1%

¹¹⁴Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	113.93709 ± 0.000465 Da
Mass Number	114
G-Factor
Half Life	121 ± 9 ms
Spin	5
Quadrupole Moment
Discovery Year	1994
Parity	+

¹¹⁴Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.3%

¹¹⁵Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	114.9401 ± 0.00021 Da
Mass Number	115
G-Factor
Half Life	78 ± 2 ms
Spin	5/2
Quadrupole Moment
Discovery Year	1994
Parity	+

¹¹⁵Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%

¹¹⁶Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	115.94502 ± 0.00032 Da
Mass Number	116
G-Factor
Half Life	57 ± 3 ms
Spin	2
Quadrupole Moment
Discovery Year	1997
Parity	+

¹¹⁶Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹¹⁷Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	116.94832 ± 0.000429 Da
Mass Number	117
G-Factor
Half Life	44.5 ± 3 ms
Spin	5/2
Quadrupole Moment
Discovery Year	1997
Parity	+

¹¹⁷Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹¹⁸Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	117.953526 ± 0.000429 Da
Mass Number	118
G-Factor
Half Life	30 ± 4 ms
Spin	2
Quadrupole Moment
Discovery Year	2010
Parity	+

¹¹⁸Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹¹⁹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	118.956876 ± 0.000537 Da
Mass Number	119
G-Factor
Half Life	22 ± 3 ms
Spin	5/2
Quadrupole Moment
Discovery Year	2010
Parity	+

¹¹⁹Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹²⁰Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	119.962426 ± 0.000537 Da
Mass Number	120
G-Factor
Half Life	21 ± 5 ms
Spin	3
Quadrupole Moment
Discovery Year	2010
Parity	+

¹²⁰Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹²¹Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	120.96614 ± 0.000537 Da
Mass Number	121
G-Factor
Half Life	22 ± 6 ms
Spin	5/2
Quadrupole Moment
Discovery Year	2015
Parity	+

¹²¹Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

¹²²Tc

Abundance	Radioactive ☢️
Relative Atomic Mass	121.97176 ± 0.000322 Da
Mass Number	122
G-Factor
Half Life
Spin	1
Quadrupole Moment
Discovery Year	2018
Parity	+

¹²²Tc Decay Modes

Decay Mode	Intensity
β⁻ (β⁻ decay)	%
β⁻ n (β⁻-delayed neutron emission)	%
2n (2-neutron emission)	%

History

Element 43 was predicted on the basis of the periodic table, and was erroneously reported as having been discovered in 1925, at which time it was named masurium. The element was actually discovered by Carlo Perrier and Emilio Segrè in 1937. It was also found in a sample of molybdenum sent by Ernest Lawrence that was bombarded by deuterons in the Berkeley cyclotron. From the Greek word technetos, artificial

Discoverers	Carlo Perrier, Émillo Segrè
Discovery Location	Italy
Discovery Year	1937
Etymology (Name Origin)	Greek: technêtos (artificial).
Pronunciation	tek-NEE-shi-em (English)

Technetium is harmful due to its radioactivity

Technetium was the first element to be produced artificially

Uses

Technetium is used in nuclear medicine to carry out a number of medical tests, mainly relating to imaging and functional studies of internal bodily organs like bone scan. It is also used industrially for equipment calibration following its approval as a standard beta emitter. Mild carbon steels may be effectively protected by minute quantities of technetium, but this corrosion protection is limited to closed systems because of technetium's radioactivity. Added to iron in quantities as low as 55 part-per-million transforms the iron into a corrosion-resistant alloy.

Sources

Made first by bombarding molybdenum with deuterons (heavy hydrogen) in a cyclotron.

Abundance
Abundance in Earth's crust
Abundance in Oceans
Abundance in Human Body	0 %
Abundance in Meteor	0 %
Abundance in Sun	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

Australian Educational Vocabulary ID	scot/3581
BNCF Thesaurus ID	3496
Bibliothèque nationale de France ID	121508612
Brockhaus Enzyklopädie online ID	technetium
CAB ID	257934
CAS Registry Number	7440-26-8
CPV Supplementary	AA20
ChEBI ID	33353
ChemSpider ID	22396
Common Procurement Vocabulary	14742000
DSSTOX compound identifier	DTXCID1047655
DSSTox substance ID	DTXSID5075028
DeCS ID	29561
Den Store Danske ID	technetium
ECHA Substance Infocard ID	100.028.305
Encyclopædia Britannica Online ID	science/technetium
Encyclopædia Universalis ID	technetium
Freebase ID	/m/025sk5f
GND ID	4184557-2
Gran Enciclopèdia Catalana ID	0145200
Great Russian Encyclopedia Online ID	4190712
HSDB ID	7542
InChI	InChI=1S/Tc
InChIKey	GKLVYJBZJHMRIY-UHFFFAOYSA-N
KBpedia ID	Technetium
Krugosvet article	nauka_i_tehnika/himiya/TEHNETSI.html
Library of Congress authority ID	sh85133086
MeSH descriptor ID	D013667
NDL Authority ID	00572811
Namuwiki ID	테크네튬
National Library of Israel J9U ID	987007563196105171
OmegaWiki Defined Meaning	363476
OpenAlex ID	C522557706
PSH ID	5773
Probes And Drugs ID	PD094567
PubChem CID	23957
Quora topic ID	Technetium
Store medisinske leksikon ID	technetium
Store medisinske leksikon ID	technetium_-_radiologi
Store norske leksikon ID	technetium
Treccani ID	tecnezio
UK Parliament thesaurus ID	443372
USGS Thesaurus ID	1588
WordNet 3.1 Synset ID	14681226-n
YSO ID	39264

Technetium (Tc)

Properties

Isotopes of Technetium

83Tc

83Tc Decay Modes

84Tc

84Tc Decay Modes

85Tc

85Tc Decay Modes

86Tc

86Tc Decay Modes

87Tc

87Tc Decay Modes

88Tc

88Tc Decay Modes

89Tc

89Tc Decay Modes

90Tc

90Tc Decay Modes

91Tc

91Tc Decay Modes

92Tc

92Tc Decay Modes

93Tc

93Tc Decay Modes

94Tc

94Tc Decay Modes

95Tc

95Tc Decay Modes

96Tc

96Tc Decay Modes

97Tc

97Tc Decay Modes

98Tc

98Tc Decay Modes

99Tc

99Tc Decay Modes

100Tc

100Tc Decay Modes

101Tc

101Tc Decay Modes

102Tc

102Tc Decay Modes

103Tc

103Tc Decay Modes

104Tc

104Tc Decay Modes

105Tc

105Tc Decay Modes

106Tc

106Tc Decay Modes

107Tc

107Tc Decay Modes

108Tc

108Tc Decay Modes

109Tc

109Tc Decay Modes

110Tc

110Tc Decay Modes

111Tc

111Tc Decay Modes

112Tc

112Tc Decay Modes

113Tc

113Tc Decay Modes

114Tc

114Tc Decay Modes

115Tc

115Tc Decay Modes

116Tc

116Tc Decay Modes

117Tc

117Tc Decay Modes

118Tc

118Tc Decay Modes

119Tc

119Tc Decay Modes

120Tc

120Tc Decay Modes

121Tc