atomic number 18

Noun

Meaning

a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

Source: WordNet

Synonyms

argon ar

Hypernyms

element chemical element inert gas noble gas argonon

Close letter words and terms

atomic number 15 atomic number 16 atomic number 17 atomic number 19 atomic number 2 atomic number 20