Answer: Chemical properties.
- A Mass number
- B Chemical properties
- C Nuclear size
- D Number of neutrons
Correct answer: B. Chemical properties
Explanation: Valence electrons participate in bonding, so they largely determine chemical properties.
Bohr's model: electrons occupy fixed circular shells (K, L, M) around the nucleus, with each shell holding up to 2n2 electrons.
Concept context
Explore how electrons are arranged inside an atom. Covers Bohr's model, quantum numbers, Heisenberg's uncertainty principle, shapes of s, p, d orbitals, and electronic configuration rules.