Chemical Elements.com - Europium (Eu)

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Basic Information

Name: Europium
Symbol: Eu
Atomic Number: 63
Atomic Mass: 151.964 amu
Melting Point: 822.0 °C (1095.15 K, 1511.6 °F)
Boiling Point: 1597.0 °C (1870.15 K, 2906.6 °F)
Number of Protons/Electrons: 63
Number of Neutrons: 89
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 5.259 g/cm³
Color: silver

Atomic Structure

Number of Energy Levels: 6

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Sixth Energy Level:

Isotopes

Isotope	Half Life
Eu-147	24.4 days
Eu-148	54.5 days
Eu-149	93.1 days
Eu-150	36.0 years
Eu-151	Stable
Eu-152	13.5 years
Eu-152m	9.3 hours
Eu-153	Stable
Eu-154	8.6 years
Eu-155	7.4 years
Eu-156	15.2 days

Facts

Date of Discovery: 1901
Discoverer: Eugene Demarcay
Name Origin: Europe
Uses: color televisions
Obtained From: Man-made

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