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==Key Stage 3==
[[File:HeliumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Helium]].]]
[[File:Helium2dWK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Helium]] [[atom]] with 2 [[proton]]s and 2 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]] s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Helium]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 2.