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Erbium

(Er)

Category

Lanthanoid

Series

lanthanide

Relative atomic mass

167.259

Density

9.066

Melting point (°C)

1529

Boiling point (°C)

2868

Electronegativity (Pauling)

1.24

Discovery year

1843

Discovered by

Carl Gustaf Mosander

created by @lukaswyss

Erbium (Er) – Element 68