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[W/K] :: atomic number 17
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1 definition
for atomic number 17
From WordNet (r) 2.0 :
atomic number 17
n : a common nonmetallic element belonging to the halogens; best
known as a heavy yellow irritating toxic gas; used to
purify water and as a bleaching agent and disinfectant;
occurs naturally only as a salt (as in sea water) [syn: chlorine,
Cl]
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