Chemical Elements.com

Show Table With:
   Name
   Atomic Number
   Atomic Mass
   Electron Configuration
   Number of Neutrons
   Melting Point
   Boiling Point
   Date of Discovery
   Crystal Structure

Element Groups:
   Alkali Metals
   Alkaline Earth Metals
   Transition Metals
   Other Metals
   Metalloids
   Non-Metals
   Halogens
   Noble Gases
   Rare Earth Elements

Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Curium
Symbol: Cm
Atomic Number: 96
Atomic Mass: (247.0) amu
Melting Point: 1340.0 °C (1613.15 K, 2444.0 °F)
Boiling Point: Unknown
Number of Protons/Electrons: 96
Number of Neutrons: 151
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: 13.511 g/cm³
Color: Unknown

Atomic Structure

Number of Energy Levels: 7

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Sixth Energy Level:

Seventh Energy Level:

Isotopes

Isotope	Half Life
Cm-241	32.8 days
Cm-242	162.8 days
Cm-243	29.1 years
Cm-244	18.1 years
Cm-245	8500.0 years
Cm-246	4760.0 years
Cm-247	1.56E7 years
Cm-248	348000.0 years
Cm-249	1.1 hours
Cm-250	9700.0 years

Facts

Date of Discovery: 1944
Discoverer: G.T. Seaborg
Name Origin: After Pierre and Marie Curie
Uses: No uses known
Obtained From: Man-made

MLA Format for Citing This Page

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

For more information about citing online sources, please visit the MLA's Website.