Cerium

Statistics:

• Name: Cerium
• Symbol: Ce
• Classification: Lanthanide
• Atomic Number: 58
• Atomic Mass: 140.116 g/mol
• Density: 6.77 g/cm³
• Melting: 798°C
• Boiling: 3257°C
• Protons & Electrons:58
• Neutrons:82
• Discovered: 1803
• Discovered By: von Hisinger and Berzelius
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 19
• Level 5: 9
• Level 6: 2

Isotopes:

Isotope: Half-life

• ¹³⁴Ce: 3.16 days
• ¹³⁶Ce: stable
• ¹³⁸Ce: stable
• ¹³⁹Ce: 137.640 days
• ¹⁴⁰Ce: stable
• ¹⁴¹Ce: 32.501 days
• ¹⁴²Ce: 5e+16 years
• ¹⁴³Ce: 33.039 hours
• ¹⁴⁴Ce: 284.893 days

Brief Summary

Cerium is a Lanthanide with the symbol 'Ce' and contains 58 Protons & Electrons with 82 neutrons in the nucleus of the atom. Cerium has an atomic mass of 140.116 g/mol and, at a temperature of 20°C, has a density of 6.77 g/cm³. It will melt at a temperature of 798°C and boil at 3257°C.

Cerium was discovered by von Hisinger and Berzelius in 1803 and is named 'Cerium' Ceres, an asteroid.

Some common usages for Cerium: heat-resistant alloys.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Cerium :: Ce :: 58 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/cerium.html>.