63 Eu 151.9641

Europium

LANTHANIDE

Phase: Solid

Discovered: Eugène-Anatole Demarçay

Block: F

Summary

Europium is a chemical element with symbol Eu and atomic number 63. It was isolated in 1901 and is named after the continent of Europe. It is a moderately hard, silvery metal which readily oxidizes in air and water.

Source: Wikipedia

Physical Properties

Atomic Mass 151.9641 u

Density 5.264 g/cm³

Melting Point 1099 K

Boiling Point 1802 K

Molar Heat 27.66 J/(mol·K)

Electron Affinity 11.2 kJ/mol

Ionization Energies

1^st: 547.1 kJ/mol

2^nd: 1085 kJ/mol

3^rd: 2404 kJ/mol

4^th: 4120 kJ/mol