Valence electrons are located in the outer shell of an atom.

• A. In the nucleus
• B. Between shells
• C. True
• D. False

Answer: (C)

Valence electrons are the electrons in the outermost energy level of an atom. They sit in the outer shell because the inner shells fill first, and the outer shell is the last to be occupied. These outer electrons are the ones most exposed to other atoms and are the ones that participate in bonding and chemical reactions, shaping an element’s reactivity and properties. The nucleus contains protons and neutrons, not valence electrons, and electrons occupy orbitals within shells rather than existing between them. So the statement is true: valence electrons reside in the outer shell. In atoms with only one shell (like hydrogen or helium), that shell is both inner and outer, but it still defines the valence behavior.