Why are the noble gases the least reactive elements?(1 point)ResponsesTheir outer most energy levels are complete with 8 electrons.Their outer most energy levels are complete with 8 electrons.They are all radioactive.They are all radioactive.They have the same number of electrons as protons.They have the same number of electrons as protons.They are the last elements in each row on the periodic table.

1 answer

The reason noble gases are the least reactive elements is that their outermost energy levels are complete with 8 electrons. This full valence shell makes them stable and less likely to engage in chemical reactions to gain or lose electrons. Therefore, the correct response is:

Their outer most energy levels are complete with 8 electrons.