Characteristics of Ununpentium:
* Symbol: Uup
* Atomic number: 115
* Atomic weight: [289] (most stable known isotope)
* Melting point: Unknown
* Boiling point: Unknown
* Density: Unknown
* Appearance: Predicted to be a solid at room temperature
* Oxidation states: +5, +3
* Electron configuration: [Rn] 5f^14 6d^9 7s^2
* Ionization energy: Unknown
* Magnetic susceptibility: Unknown
* Radioactive: Yes, all isotopes are radioactive
* Half-life: 290 milliseconds (Uup-289)
Ununpentium was first synthesized in 2004 at the Joint Institute for Nuclear Research in Dubna, Russia. It was created by bombarding a target of americium-243 with a beam of calcium-48 ions. The resulting nucleus was then identified by its characteristic decay products.
Ununpentium has not yet been studied in detail, but it is predicted to be a highly reactive metal. It is expected to react readily with oxygen, water, and other elements. Ununpentium is also expected to be a powerful oxidizing agent.
The study of ununpentium and other superheavy elements is important for understanding the structure of the atomic nucleus. These elements help us to test the limits of nuclear stability and to learn more about the fundamental forces that hold the nucleus together.
