Definition of Atomic number 18

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

Exact synonyms: Ar, Argon
Generic synonyms: Chemical Element, Element, Argonon, Inert Gas, Noble Gas
Substance meronyms: Air



Atomic Number 18 Pictures

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Lexicographical Neighbors of Atomic Number 18

atomic number 100
atomic number 101
atomic number 102
atomic number 103
atomic number 104
atomic number 105
atomic number 106
atomic number 107
atomic number 11
atomic number 12
atomic number 13
atomic number 14
atomic number 15
atomic number 16
atomic number 17
atomic number 18 (current term)
atomic number 19
atomic number 2
atomic number 20
atomic number 21
atomic number 22
atomic number 23
atomic number 24
atomic number 25
atomic number 26
atomic number 27
atomic number 28
atomic number 29
atomic number 3
atomic number 30

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