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: [[Rubidium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Potassium]] but less [[Reactivity|reactive]] than [[Caesium]].
: [[Rubidium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Rubidium]] [[Oxidation|oxidises]] extremely quickly in the presence of [[Oxygen]] so it must be stored in a completely sealed container.: [[Rubidium]] [[Chemical Reaction|reacts]] strongly explosively with [[water]] to produce [[Hydrogen]] [[gas]] and [[Rubidium Hydroxide]].
: [[Rubidium]] is a [[solid]] at [[STP|room temperature]].
: An [[atom]] of [[Rubidium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Rubidium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Potassium]] but less [[Reactivity|reactive]] than [[Caesium]].
: [[Rubidium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]].
: [[Rubidium]] [[Oxidation|oxidises]] extremely quickly in the presence of [[Oxygen]] so it must be stored in a completely sealed container.: [[Rubidium]] [[Chemical Reaction|reacts]] strongly explosively with [[water]] to produce [[Hydrogen]] [[gas]] and [[Rubidium Hydroxide]].
: [[Rubidium]] is a [[solid]] at [[STP|standard temperature and pressure]] with a [[Melting Point|melting point]] of 39.3 [[Degrees Celsius|°C]].
: An [[atom]] of [[Rubidium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]].
: [[Rubidium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]].