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skos:definition |
MSH: Argon. A noble gas with the atomic symbol Ar, atomic number 18, and atomic weight 39.948. It is used in fluorescent tubes and wherever an inert atmosphere is desired and nitrogen cannot be used.,CSP: noble gas element with the atomic symbol Ar, atomic number 18, and atomic weight 39.948; used in fluorescent tubes and in other situations where an inert atmosphere is desired.
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