The correct answer is: They have a full valence electron shell.
Noble gases have a full valence electron shell, meaning that their outermost energy level is completely filled with electrons. This makes them stable and less likely to gain or lose electrons to form chemical bonds with other elements. As a result, noble gases are chemically inert and have very low reactivity.
Why are the noble gases the least reactive elements? (1 point)
• They are the elements with the smallest atomic mass.
• They have a full valence electron shell.
• They have an empty inner electron shell.
• They are the most electronegative elements.
1 answer