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Additional
fluorine
English Wikipedia - The Free Encyclopedia
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Fluorine
Fluorine
is a
chemical element
with symbol
F
and
atomic number
9. It is the lightest
halogen
and exists as a highly toxic pale yellow
diatomic
gas at
standard conditions
. As the most
electronegative
element, it is extremely reactive: almost all other elements, including some
noble gases
, form compounds with fluorine.
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