Show Elements
ID 30
Symbol Er
Name Erbium
Density (g/cm<sup>3</sup>) 9.066
Atomic Number 68
Molecular Weight 167
Melting Point (K) 1770
Boiling Point (K) 3141
Specific Heat Capacity (J/kg K) 168
Electro Negativity 1.24
Curie temperature (K) 32
Bohr Magneton (J/T)
Magnetization Saturation (MA m<sup>-1</sup>)
Crystal Structure Hexagonal close-packed (hcp)
Appearance Silvery white
Element category Lanthanide
Magnetic ordering Paramagnetic 
Discovery Carl Gustaf Mosander (1843)
General Information Erbium is a chemical element with the symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. It is a lanthanide, a rare earth element.
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