Rutenium (Ru)
Rutenium is the chemical element with atomic number 44 and symbol Ru. It is a logam transisi in period 5, group 8, with a standard atomic weight of 101.07 u.
Fakta utama
- Z
- 44
- Atomic weight
- 101.07 u
- Category
- logam transisi
- State at 298 K
- Solid
- Occurrence
- primordial
- Discovered
- 1844
- CAS
- 7440-18-8
Sifat terukur
| Property | Value | Source |
|---|---|---|
| Electronegativity | 2.2 | National Center for Biotechnology Information (NIH) |
| Melting point | 2,607 K | National Center for Biotechnology Information (NIH) |
| Boiling point | 4,423 K | National Center for Biotechnology Information (NIH) |
| Density stp | 12.1 g/cm³ | National Center for Biotechnology Information (NIH) |
| Atomic radius empirical | 207 pm | National Center for Biotechnology Information (NIH) |
| Ionization energy 1st | 710.2 kJ/mol | National Center for Biotechnology Information (NIH) |
| Electron affinity | 101.3 kJ/mol | National Center for Biotechnology Information (NIH) |
Konfigurasi elektron
- Noble gas notation
- [Kr] 4d⁷ 5s¹
- Full notation
- 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d⁷ 5s¹
- Electrons per shell
- 2, 8, 18, 15, 1