What quality do all of the elements in group 18, the noble gases, share?(1 point)%0D%0AResponses%0D%0A%0D%0AThey are all highly reactive.%0D%0AThey are all highly reactive.%0D%0A%0D%0AThey all have 8 valence elections.%0D%0AThey all have 8 valence elections.%0D%0A%0D%0AThey all have a full outer valence shell.%0D%0AThey all have a full outer valence shell.%0D%0A%0D%0AThey all have the same number of protons in their nucleus.%0D%0AThey all have the same number of protons in their nucleus.
