Oganesson is a synthetic chemical element with the symbol Og and atomic number 118. Wikipedia

Symbol Og, a chemical element Wikipedia Disambiguation

Element with the atomic number of 118 Wikidata

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. Wiktionary

Chemical element with atomic number 118. Wiktionary (translation)