-- card: 18618 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 14320
-- name: Cl


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Cl

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Chlorine

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17

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halogen, greenish-yellow gas, combines with almost all elements, respiratory irritant, odorous, highly toxic



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35.453

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3.214

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-100.98

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-34.6

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-1,+5,+7

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(Gr. chloros, greenish yellow) Discovered by Scheele in 1774 and named by Davy in 1810. Not found in a free state in nature, found commonly with Na as NaCl. 
Chlorine was used as a war gas in 1915.

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used to provide safe drinking water, paper products, dyestuffs, textiles, petroleum products, medicines, insecticides, antiseptics, plastics, solvents

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0.099

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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    5