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F

Fluorine

#9 · Reactive Nonmetal

Mass18.998 u
Density0.001696 g/cm³
Melting53.53 K
Boiling85.03 K
Electronegativity3.98
Ionization Energy1681.0 kJ/mol
Atomic Radius42.0 pm
Blockp-block
State (RT)Gas
Config[He] 2s2 2p5
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