Ytterbium was discovered by Jean de Marignac at 1878 in Switzerland.
Origin of name: named after the village of "Ytterby" near Vaxholm in Sweden.
Atomic Number: 70
Atomic Weight: 173.054
Melting Point: 1092 K (819°C or 1506°F)
Boiling Point: 1469 K (1196°C or 2185°F)
Density: 6.90 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 6 Group Number: none Group Name: Lanthanide