Er

ERBIUM

Definition it occurs mostly in the same minerals and areas of dyprosium. and has a bright silvery luster.

Discovery 1843 Carl gustav masanader of sweden

Uses Glass colorant

Group of Elements Lanthanide(Solid)

Atomic Weight 167.259

Oxidation State +3

Melting Point 1522

Boiling Point 2510

Density 9.04 g/cm3

Electronegativity 1.2