Name: Cerium
Symbol: Ce
Atomic Number: 58
Atomic Mass: 140.116 amu
Melting Point: 795.0 °C (1068.15 °K, 1463.0 °F)
Boiling Point: 3257.0 °C (3530.15 °K, 5894.6 °F)
Number of Protons/Electrons: 58
Number of Neutrons: 82
Crystal Structure: Cubic
Density @ 293 K: 6.773 g/cm3
Color: gray
Atomic Structure
![[Bohr Model of Cerium]](b0058.gif) |
Number of Energy Levels: 6 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 20 Fifth Energy Level: 8 Sixth Energy Level: 2 |
Isotopes
| Isotope | Half Life |
| Ce-134 | 3016.0 days |
| Ce-136 | Stable |
| Ce-138 | Stable |
| Ce-139 | 137.6 days |
| Ce-140 | Stable |
| Ce-141 | 32.5 days |
| Ce-142 | Stable |
| Ce-143 | 1.4 days |
| Ce-144 | 284.6 days |
Facts
Date of Discovery: 1803Discoverer: W. von Hisinger
Name Origin: Ceres (asteroid)
Uses: heat-resistant alloys
Obtained From: monazite
Information provided by: http://www.chemicalelements.com