Erbium was discovered by Carl G. Mosander at 1842 in Sweden.
Origin of name: named after the village of "Ytterby" near Vaxholm in Sweden.
Atomic Number: 68
Atomic Weight: 167.259
Melting Point: 1802 K (1529°C or 2784°F)
Boiling Point: 3141 K (2868°C or 5194°F)
Density: 9.07 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 6 Group Number: none Group Name: Lanthanide