Which of the following best differentiates valence electrons from inner core electrons?

• A. Valence electrons are protons, while inner core electrons are neutrons.
• B. Valence electrons are in the innermost shell and participate in bonding, while inner core electrons are in outer shells and do not participate in bonding.
• C. Valence electrons are in the outermost shell and participate in bonding, while inner core electrons are in inner shells and do not participate in bonding.
• D. Valence electrons are neutrons, while inner core electrons are protons.

Answer: (C)