Atomic Number: | 43 |
Element Symbol: | Tc |
Element Name: | Technetium |
Atomic Weight: | 98 |
Group Number: | 7 |
Group Name: | none |
Period Number: | 5 |
Block: | d-block |
Ground State Configuration: | [Kr] 4d5 5s2 |
Ground State Level: | 6S5/2 |
Standard State: | Artificially prepared |
Bond Length: | 270.3 |
Atomic Radius Empirical: | 135 |
Atomic Radius Calculated: | 183 |
Covalent Radius Empirical: | 156 |
Electron Affinity: | 53 |
First Ionization Energy: | 702 |
Pauling Electronegativity: | 1.9 |
Allred Rochow Electronegativity: | 1.36 |
Density Of Solid: | 11500 |
Molar Volume: | 8.63 |
Electrical Resistivity: | 20 |
Melting Point: | 2157 |
Boiling Point: | 4265 |
Superconduction Temperature: | -265.3 |
Thermal Conductivity: | 51 |
Enthalpy Of Fusion: | 23 |
Enthalpy Of Vaporization: | 550 |
Enthalpy Of Atmization: | 661 |
Most Common Oxidation Numbers: | 7,4 |
Color: | Silvery grey metallic |
Classification: | Metallic |
Discovered By: | Carlo Perrier, Emilio Segre |
Discovered At: | Italy |
Discovered When: | 1937 |
Origin Of Name: | From the Greek word technikos meaning artificial |
Calculate the molecular weight of Technetium or molecular weight Tc.
Also see the full list of chemical elements and atomic weights.