Question

Why are the noble gases the least reactive elements? (1 point)ResponsesThey are the elements with the smallest atomic mass. They are the elements with the smallest atomic mass. They have an empty inner electron shell. They have an empty inner electron shell. They have a full valence electron shell. They have a full valence electron shell. They are the most electronegative elements. 

Answer 1

The correct response is: **They have a full valence electron shell.**

Noble gases have a full outer shell of electrons, which makes them stable and less likely to react with other elements to form chemical bonds.