Atomic Properties
- Atomic Number
- 44
- Atomic Mass
- 101.0700 u
- Electron Configuration
- [Kr] 4d7 5s1
- Electronegativity
- 2.20
- Block
- d-block
- Group
- 8
- Period
- 5
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 2607.00 K
- Boiling Point
- 4423.00 K
- Density
- 12.4500 g/cm³
About Ruthenium
Rare platinum group metal; used in electronics and catalysts.
Isotopes of Ruthenium
Ruthenium has 7 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 96Ru | 96 | 95.90759025 | 5.540% | Stable |
| 98Ru | 98 | 97.9052868 | 1.870% | Stable |
| 99Ru | 99 | 98.9059341 | 12.76% | Stable |
| 100Ru | 100 | 99.9042143 | 12.60% | Stable |
| 101Ru | 101 | 100.9055769 | 17.06% | Stable |
| 102Ru | 102 | 101.9043441 | 31.55% | Stable |
| 104Ru | 104 | 103.9054275 | 18.62% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)