Changes

: '''Fluoride''' [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charged|negatively charged]].

====Properties====

: [[Fluorine]] is the most [[Reactivity|reactive]] [[Halogen]].

: [[Fluorine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen Fluoride]] which [[dissolve]]s in [[water]] to produce [[Hydrofluoric Acid]].