Ytterbium (Yb)
Ytterbium (Yb) is element 70 of the periodic table, a lanthanide in period 6, in the f-block. Its standard atomic weight is 173.045, so one mole of ytterbium atoms has a mass of 173.045 g. At room temperature it is a solid; it melts at 818.85 °C and boils at 1195.85 °C.
| Atomic number | 70 |
|---|---|
| Symbol | Yb |
| Standard atomic weight | 173.045 |
| Molar mass | 173.045 g/mol |
| Category | Lanthanide |
| Group | f-block (lanthanide series) |
| Period | 6 |
| Block | f-block |
| Electron configuration | [Xe] 6s2 4f14 |
| Oxidation states | +3, +2 |
| Electronegativity (Pauling) | — |
| Atomic radius (van der Waals) | 242 pm |
| First ionisation energy | 6.254 eV (603.4 kJ/mol) |
| Electron affinity | — |
| State at room temperature | Solid |
| Melting point | 1092 K (818.85 °C) |
| Boiling point | 1469 K (1195.85 °C) |
| Density | 6.9 g/cm³ |
| Discovered | 1878 |
Lanthanides
La · LanthanumCe · CeriumPr · PraseodymiumNd · NeodymiumPm · PromethiumSm · SamariumEu · EuropiumGd · GadoliniumTb · TerbiumDy · DysprosiumHo · HolmiumEr · ErbiumTm · Thulium
Calculate with Ytterbium
Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.