Why are the noble gases the least reactive elements?(1 point)%0D%0AResponses%0D%0A%0D%0AThey are the last elements in each row on the periodic table.%0D%0AThey are the last elements in each row on the periodic table.%0D%0A%0D%0ATheir outer most energy levels are complete with 8 electrons.%0D%0ATheir outer most energy levels are complete with 8 electrons.%0D%0A%0D%0AThey are all radioactive.%0D%0AThey are all radioactive.%0D%0A%0D%0AThey have the same number of electrons as protons.%0D%0AThey have the same number of electrons as protons.