About This Site

 Window Version

 Show Table With:
   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
   Noble Gases
   Rare Earth Elements


Ununnilium at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Ununnilium
Symbol: Uun
Atomic Number: 110
Atomic Mass: (269.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 110
Number of Neutrons: 159
Classification: Transition Metal
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown
More information about the naming of the heavy elements is available

Atomic Structure

[Bohr Model of Ununnilium]  
Number of Energy Levels: 7

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 32
    Sixth Energy Level: 17
    Seventh Energy Level: 1


Isotope Half Life
Uun-27210.0 milliseconds


Date of Discovery: 1987
Discoverer: Organessian, et al.
Name Origin: Un (one) un (one) nil (zero) ium
Uses: No uses known
Obtained From: Man-made

Related Links

None available.

MLA Format for Citing This Page

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

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

This page was created by Yinon Bentor.
Use of this web site is restricted by this site's license agreement.
Copyright © 1996-2012 Yinon Bentor. All Rights Reserved.