![[ATOM]](atom.gif) |
Europium
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Information valid for Eu-152 unless otherwise noted
Basic Information
Symbol: Eu
Atomic Number: 63
Mass: 151.964
Melting Point: 822.0 C
Boiling Point: 1597.0 C
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
![[Bohr Model of Europium]](b0063.gif) |
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Number of Energy Levels: 6
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 25
Fifth Energy Level: 8
Sixth Energy Level: 2
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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