argonnoun [ U ]
uk/ˈɑː.ɡɒn/us/ˈɑːr.ɡɑːn/symbol Ara chemical element that is a gas found in air. Argon does not react with other elements and is sometimes used to make electric lights.
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Chemical elements
- alkali metal
- antimony
- calcium
- carbonic
- carbonic acid
- cesium
- cl
- graphene
- lithium
- nickel
- plutonium
- quicksilver
- selenium
- sodium
- strontium
- sulphur
- transition metal
- urea
- vanadium
- zinc
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