• Name: Ununpentium (temporary)

  • Symbol: Uup

  • Number of Energy Levels: 7

  • Electrons on the outer energy level: 5 (predicted)

  • Atomic Number: 115

  • Atomic Mass: 289 Amu

  • Protons / Electrons: 115

  • Neutrons: 174

  • Density: 13.5 g/cm3 (predicted)

  • Classification: Transition Metal (predicted)

Top 8 interesting facts about Ununpentium (temporary)

  • Ununpentium was discovered in 2003 at Joint Institute for Nuclear Research in Russia and Lawrence Livermore National Laboratory. Ununpentium was named according to IUPAC systematic element name and it is a temporary name.
  • Its melting point is predicted to be at 670 K (400 C, 750 F) and its boiling point is predicted to be at 1400 K (1100 C, 2000 F).
  • Ununpentium's symbol (Uup) and its name are temporary.
  • Ununpentium is a synthetic, superheavy, and extremely radioactive element.
  • Ununpentium-289 is the most stable isotope of ununpentium (half-life of 220 milliseconds).
  • Ununpentium is known as element 115 or eka-bismuth.
  • Just 50 atoms of ununpentium were observed up to date.
  • Ununpentium is predicted to have similar properties to its homologues nitrogen, phosphorus, arsenic, antimony, and bismuth but it should have several important differences as well.