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===Meaning===
[[File:RubidiumSymbol.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Rubidium]].]]
[[Rubidium]] is a [[Group 1]] [[element]] , on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 37.
===About Rubidium===
: [[Rubidium]] has the [[Chemical Formula|chemical formula]] [[Rubidium|Rb]].
==Key Stage 4==
===Meaning===
[[Rubidium]] is a [[Group 1]] [[element]] , on the [[Periodic Table]], with 37 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Rubidium===
: [[Rubidium]] has the [[Chemical Formula|chemical formula]] [[Rubidium|Rb]].