oganesson

Meaning

Noun

• The chemical element (Symbol Og) with atomic number 118. It is the heaviest known element. Highly radioactive, it does not occur naturally. Originally expected to be a noble gas, it is now predicted to be a reactive metallic solid, and a semi-conductor or a post-transition metal.

Related

Similar words

• Og
• ununoctium
• eka-radon

Origin

• Oganessian + -on. Promulgated in June 2016 by the IUPAC based on recommendations of the Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory to honor the Russian physicist Yuri Oganessian (born 1933) who researched superheavy elements.