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==Key Stage 4==
===Meaning===
[[Group 0]] [[element]]s, also known as '''Nobel Noble Gases''' on the [[Periodic Table]] are the [[element]]s which have a full [[Outer Shell|outer shell]].
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===About the Nobel Noble Gases===
: [[Group 0]] used to be called '''Group 8''' but this caused confusion because most [[element]]s in '''Group 8''' have 8 [[electron]]s in their [[Outer Shell]] but [[Helium]] only has 2, so it was renamed [[Group 0]].
: The '''Nobel Noble Gases''' are all [[inert]] which means they do not [[Chemical Reaction|react]] with other [[atom]]s.: The '''Nobel Noble Gases''' are all [[monatomic]] which means they exist only as single [[atom]]s and do not join to form any [[molecule]]s.The '''Nobel Noble Gases''' in order of the number of [[Electron Orbital|electron shells]]:
*[[Helium]] (He)
*[[Neon]] (Ne)
===Chemical Properties===
: The '''Nobel Noble Gases''' are all [[inert]] (unreactive) because they have a full [[Outer Shell|outer shell]].
===Physical Properties===
: The '''Nobel Noble Gases''' are all [[gas]]es at [[Room Temperature|room temperature]].
: The [[density]] and [[Boiling Point|boiling point]] all increase as you go down the [[Periodic Table]].