Ytterbium
Ytterbium is a chemical element with symbol Yb and atomic number 70. It is the fourteenth and penultimate element in the lanthanide series, which is the basis of the relative stability of its +2 oxidation state.
Atomic Weight: 455 Density: 757 g/cm3 Melting Point: 767564 °C Boiling Point: 43434 °C