Answer: Heisenberg uncertainty principle.
- A Aufbau principle
- B Hund's rule
- C Heisenberg uncertainty principle
- D Pauli exclusion principle
Correct answer: C. Heisenberg uncertainty principle
Explanation: Heisenberg's uncertainty principle limits simultaneous exact measurement of position and momentum.
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.