Question

the valence electrons are found...
a. in the innermost electron shell.
b. in the outermost proton shell.
c. in the outermost electron shell.

Explanation:

Valence electrons are the electrons in the outermost shell of an atom. They are involved in chemical bonding. Protons are in the nucleus, not in shells. The innermost shell electrons are not valence electrons.

Answer:

C. in the outermost electron shell.