Question

Why are the noble gases the least reactive elements?(1 point) Responses Their 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.

Answer 1

The correct response is: **Their outermost energy levels are complete with 8 electrons.**

Noble gases have full valence shells, which makes them stable and nonreactive under normal conditions.