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: Uranium
Symbol: U
Atomic Number: 92
Atomic Mass: 238.0289 amu
Melting Point: 1132.0 °C (1405.15 K, 2069.6 °F)
Boiling Point: 3818.0 °C (4091.15 K, 6904.4 °F)
Number of Protons/Electrons: 92
Number of Neutrons: 146
Classification: Rare Earth
Crystal Structure: Orthorhombic
Density @ 293 K: 18.95 g/cm³
Color: silverish

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
U-230	20.8 days
U-231	4.2 days
U-232	70.0 years
U-233	159000.0 years
U-234	247000.0 years
U-235	7.0004E8 years
U-236	2.34E7 years
U-237	6.75 days
U-238	4.47E9 years
U-239	23.5 minutes
U-240	14.1 hours

Facts

Date of Discovery: 1789
Discoverer: Martin Klaproth
Name Origin: After the planet Uranus
Uses: fuel for nuclear reactors
Obtained From: many rocks, large amounts in pitchblende and carnotite

MLA Format for Citing This Page

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

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