Periodic Table of Elements




Ytterbium was discovered by the Swiss chemist Jean Charles Galissard de Marignac, in 1878.

Name: Ytterbium
Symbol: Yb
Atomic number: 70
Atomic weight: 173.05
State: solid
Group, period, block: n/a, 6, f
Color: silvery white
Classification: lanthanide
Electron configuration: 4f14 6s2

Physical properties

Density: 6.90 g/cm-3
Melting point: 1097 K,824 C,1515 F
Boiling point: 1469 K,1196 C,2185 F

Atomic properties

Oxidation states: 3, 2, 1
Electronegativity: 1.1 (Pauling scale)
Ionization energies: 1st: 603.4 kJmol-1
Covalent radius: 1878 pm
Van der Waals radius:no data
  • Yb
  • Electron Configuration


There are seven naturally occurring isotopes of ytterbium exist, 168Yb, 170Yb, 171Yb, 172Yb, 173Yb, 174Yb, and 176Yb. About 31.83% of the ytterbium in nature is 174Yb.