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===About the Nobel 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 Gases''' are all [[inert]] which means they do not [[Chemical Reaction|react]] with other [[atom]]s.
: The '''Nobel Gases''' are all [[monatomic]] which means they exist only as single [[atom]]s and do not join to form any [[molecule]]s.