Question

question 7 (1 point) which principle or rule demonstrates the fact that unpaired electrons in an atom all have the same spin? aufbau principle pauli principle hunds rule heisenberg principle

Explanation:

Hund's Rule states that in a set of degenerate orbitals, electrons will first occupy the orbitals singly with parallel spins before pairing up. It shows that unpaired electrons in an atom have the same spin. The Aufbau Principle deals with the order of filling orbitals, the Pauli Principle states that no two electrons in an atom can have the same set of four quantum - numbers, and the Heisenberg Principle is about the uncertainty in position and momentum of a particle.

Answer:

B. Hund's Rule