70 Yb
Lanthanide
Ytterbium
Used in atomic clocks.
Properties of Ytterbium
- Atomic number (Z)
- 70
- Symbol
- Yb
- Atomic mass
- 173.05 g/mol
- Category
- Lanthanide
- Group
- 3
- Period
- 6
- Electron configuration
- [Xe] 4f¹⁴ 6s²
- Electronegativity (Pauling)
- 1.1
- Atomic radius
- 222 pm
- First ionization energy
- 603 kJ/mol
- Melting point
- 1097 K (823.9 °C)
- Boiling point
- 1469 K (1195.8 °C)
- Density
- 6.965 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1878