OGANESSON

Etymology

Noun

oganesson (uncountable)

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.

Synonyms

• Og (symbol)

• ununoctium (dated)

• eka-radon (dated)

Source: Wiktionary

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