15 The group of elements called the noble gases
typically do not chemically react with other
elements. This is true because noble gases tend
to have
A. more protons than other elements.
B. fewer neutrons than other elements.
C. a full outer shell of valence electrons.
D. a single valence electron in the outer shell.
The noble gases has a full outer shell so they don't have to react with other elements to gain or loose electrons (to have a full outer shell and be stable).
