Atomic Properties
- Atomic Number
- 43
- Atomic Mass
- 98.0000 u
- Electron Configuration
- [Kr] 4d5 5s2
- Electronegativity
- 1.90
- Block
- d-block
- Group
- 7
- Period
- 5
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 2430.00 K
- Boiling Point
- 4538.00 K
- Density
- 11.0000 g/cm³
About Technetium
First artificially produced element; all isotopes radioactive; used in medicine.
Isotopes of Technetium
Technetium has 0 naturally occurring isotopes, plus 3 notable radioactive isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 97Tc | 97 | 96.9063667 | — | Radioactive |
| 98Tc | 98 | 97.9072124 | — | Radioactive |
| 99Tc | 99 | 98.9062508 | — | Radioactive |
Data source: NIH PubChem (aggregated from IUPAC, NIST)