Question

valence electrons
select one:
○ a. always number 4 or 8
○ b. are in the innermost orbit
○ c. are in the outermost orbit
○ d. are in the nucleus

Explanation:

Valence electrons are defined as the electrons present in the outermost shell (orbit) of an atom. Option a is wrong as valence electrons can be from 1 to 8 (except for some special cases, but they aren't always 4 or 8). Option b is wrong because inner - most orbit electrons are not valence electrons. Option d is wrong as electrons are not in the nucleus (nucleus contains protons and neutrons). So the correct answer is c.

Answer:

c. are in the outermost orbit