Number of Energy Levels: 7 (Predicted)
Electrons on the outer energy level: 8 (Predicted)
Atomic number: 118
Atomic Mass: 294 Amu (Atomic Mass Units) (Predicted)
Density: 4.9 – 5.1 g/cm3 (Predicted)
Classification: Noble Gas (Predicted)
Ununoctium was discovered in 2002 at Joint Institute for Nuclear Research in Russia and Lawrence Livermore National Laboratory. Ununoctium was named according to IUPAC systematic element name. Its melting point is predicted to be somewhere around 258 K (-15 °C, 4.73 °F) and its boiling point is predicted to be at 350 K (80 °C, 170 °F).
Top 10 interesting facts about Ununoctium
Ununoctium’s name is temporary.
Ununoctium is also known as eka-radon or simply element 118.
Ununoctium is the only one synthetic element of group18.
Ununoctium has the highest atomic mass and the highest atomic number of all chemical elements.
Ununoctium is very radioactive.
Ununoctium’s atom is very unstable.
Only several atoms of ununoctium (ununoctium-294) have been detected so far since 2005 via collision of californium-294 and calcium-48.
Ununoctium is member of group 18 of the chemical elements but it might not be a noble gas as the other elements of the group.
Ununoctium is believed to be a solid under standard conditions of temperature and pressure, not a gas as it was believed.
Ununoctium is calculated to have a half-life of 0.89 ms.