Technetium

Symbol TcAtomic number 43
Atomic mass
98.9062
 Thermal conductivity
0.506
Atomic radius
1.95
 Covalent radius
1.2
Density
11.5
 Atomic volume
8.5
Melting point
2445
 Oxidation states
7
Boiling point
5150
 Stable isotopes
...
Heat of vapor.
660.0
 Electronegativity
1.9
Heat of fusion
24.0
 First ionization
7.28
Specific heat
0.21
 Electrical conduct.
...
Electron configuration
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Technetium

No stable isotopes of technetium exist. Technetium-99 can be produced as a radioactive isotope. Designated technetium 99m, it has a half-life of 6 hours and is widely used in nuclear medicine for imaging procedures such as brain scans.

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Technetium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
43
97
96.906364
90.2465
836.51
9/2
...
2.6 My
EC
0.32
43
98
97.907215
91.1788
843.79
6
...
4.2 My
b-
1.79

Technetium - 99 is produced by bombarding molybdenum 98Mo with neutrons. The resultant 99Mo decays with a half-life of 66 hours to a metastable state of Tc designated technetium-99m. It is a short-lived radioisotope which finds wide application in nuclear medicine for various types of scans.

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