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Basic Information

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
Classification: Rare Earth
Crystal Structure: Cubic
Density @ 293 K: 6.773 g/cm³
Color: gray

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
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: 1803
Discoverer: W. von Hisinger
Name Origin: Ceres (asteroid)
Uses: heat-resistant alloys
Obtained From: monazite

MLA Format for Citing This Page

Bentor, Yinon. Chemical Element.com - Cerium. <http://www.chemicalelements.com/elements/ce.html>.

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