LateralSuperiorGenicularSuperficialBranchArtery
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Sigma KEE - Fluorine
Fluorine
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A poisonous pale yellow gaseous element belonging to group 17 of the periodic table (The halogens). It is the most chemically reactive and electronegative element. It is highly dangerous, causing severe chemical burns on contact with flesh. Fluorine was identified by Scheele in 1771 and first isolated by Moissan in 1886.
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