Ununseptium (eka-astatine)
Symbol: Uus
Atomic Number: 117
Group: presumably a halogen
Name Origin: Un (one) un (one) sept (seven)
Discovery: This element has not been synthesized.
Electron Configuration: [Rn] 5f14 6d10 7s2 7p5 (based on astatine)
Ununseptium Facts - Periodic Table of the Chemical Elements
Chemical & Physical Properties
By Anne Marie Helmenstine, Ph.D., About.com Guide
Ununseptium would be a radioactive man-made element.
Architetto Francesco Rollandin, openclipart.org
Periodic Table of the Elements
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