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70
Yb
173.05
Ytterbium
Lanthanides · Group 16 · Period 6–7 (f)
Atomic properties
| Atomic number | 70 |
|---|---|
| Symbol | Yb |
| Standard atomic weight | 173.05 |
| Classification | Lanthanides |
| Group | f-block series |
| Period | 6 |
| Block | f-block (lanthanide) |
| Electron configuration | [Xe] 4f14 6s2 |
| Electronegativity (Pauling) | 1.10 |
| Common oxidation states | +3, +2 |
Physical properties
| Phase at 20 °C | Solid |
|---|---|
| Density | 6.90 g/cm³ |
| Melting point | 824 °C |
| Boiling point | 1196 °C |
| Discovered | 1878 |
| CAS number | — |