Eu

Europium

Atomic Number 63 · Metal piece in argon

The most reactive rare earth element. Creates red and blue phosphors in TVs and is used in euro banknote anti-forgery marks.

Atomic Mass

151.96 u

Category

Lanthanide

Phase (STP)

Solid

Density

5.243 g/cm³

Melting Point

826 °C

Boiling Point

1529 °C

Electronegativity

1.2 (Pauling)

Atomic Radius

185 pm

Electron Configuration

[Xe] 4f7 6s2

Discovered

1901 — Eugene-Anatole Demarcay

Find Europium Samples

Sample form: Metal piece in argon

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