-- card: 18747 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Ar


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Ar

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Argon

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18

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39.948

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1.7837

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-189.2

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-185.7

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0

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colorless gas,noble gas,odorless,inactive

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(Gr. argos, inactive) Discovered by Ramsay and Rayleigh in 1894. Earth's atmosphere contains 0.94% and Martian contains 1.6% of Ar. 

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electric light bulbs and fluorescent tubes, photo tubes, glow tubes, welding, cutting, as a protective gas for other substances,

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Electron Configuration:

1s  2s  2p  3s  3p  3d  4s  4p  4d  4f  5s  5p  5d  5f  6s  6p  6d  6f  7s 
 2   2    6    2    6