NO. 070Lanthanide

Yb

Ytterbium

Ytterbium is a soft lanthanide used in lasers, atomic clocks, and stress gauges.

Crystal Structure

Face-centered cubic (fcc)

Atomic Mass173.05 u

Density6.9 g/cm³

Melting Point1097 K

Boiling Point1469 K

Atomic Radius194 pm

Electronegativity1.1

Ionization Energy603 kJ/mol

Electron Affinity50 kJ/mol

Bonding TypeMetallic

Oxidation States2, 3

Acid/BaseBasic

ReactivityMedium

Electron Configuration

[Xe] 4f14 6s2

Discovered ByJean Charles Galissard de Marignac

Year1878

Known Isotopes

Yb-168Yb-170Yb-171Yb-172Yb-173Yb-174Yb-176