Why are the noble gases the least reactive elements? (1 point) Responses They have a full valence electron shell. They have a full valence electron shell. They have an empty inner electron shell. They have an empty inner electron shell. They are the elements with the smallest atomic mass. They are the elements with the smallest atomic mass. They are the most electronegative elements.
The noble gases are the least reactive elements because they have a full valence electron shell. Having a full valence electron shell makes them stable and less likely to form chemical bonds with other elements.
