|
|
Tc
in WebElements
in X-Ray info
|
Tc, 43
technetium (English)
technétium, m. (French)
Technetium, n. (German)
tekhnetsij (Russian)
teknetium (Swedish)
|
|
|
| Symbol, number | Tc, 43 (metal), Group: 7; 7B |
|---|
| Weight | 98.9062 |
|---|
| In Nature | Only synthetically prepared. |
|---|
| Discovered | 1937, by Carlo Perrier och Emilio Segrè (Italy) |
|---|
| Density [kg/m3] | 11500 [293 K] (solid) |
| Molar volume | 8.6 cm3 |
|---|
| Melting Temperature | 2445 K (2172 °C) Enthalpy: 585.22 kJ/mol |
|---|
| Boiling Temperature | 5150 K (4877 °C) Enthalpy: 23.81 kJ/mol |
|---|
| Electrical resistance | 22.6E-8 [393 K] Wm |
|---|
| Thermal | Conductivity: 50.6 [300 K] W/Km Expansion: 8.06E-6 /K |
|---|
| Ionisation [kJ/mol] |
| M--> |
M+--> |
M2+--> |
M3+--> |
M4+--> |
M5+--> |
M6+--> |
M7+--> |
M8+--> |
M9+-->M10+ |
|
|
| Thermodynamics |
| State |
DfH° |
DfG° |
S° |
CpH |
H°298.15-H°0 |
| [kJ/mol] |
[J/Kmol] |
[kJ/mol] |
|
|
|
| Isotopes |
|
Mass |
In nature |
Half-life |
Spin |
m/mN |
NMM |
Decay |
| Tc |
|
|