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: [[Helium]] has the [[Chemical Formula|chemical formula]] [[Helium|He]].
: [[Helium]] is a [[Noble Gas]].
: [[Helium]] is a [[gas]] at [[STP|room temperature]].
: [[Helium]] [[gas]] is less [[density|dense]] than [[air]].
: An [[atom]] of [[Helium]] has a full [[Outer Shell|outer shell]] of two [[electron]]s in its so it is [[Outer Shell|outer shellinert]].
==Key Stage 4==
===Meaning===
: [[Helium]] has the [[Chemical Formula|chemical formula]] [[Helium|He]].
: [[Helium]] is a [[Noble Gas]].
: [[Helium]] is a [[gas]] at [[STP|standard temperature and pressure]].
: [[Helium]] [[gas]] is less [[density|dense]] than [[air]].
: An [[atom]] of [[Helium]] has a full [[Outer Shell|outer shell]] of two [[electron]]s in its so it is [[Outer Shell|outer shellinert]].
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