Question

which electron configuration represents a violation of hunds rule for an atom in its ground state? * (0.5 points)

Explanation:

Hund's rule states that electrons in degenerate orbitals (same - energy orbitals, like the three 2p orbitals) first fill each orbital singly with parallel spins before pairing up. In option C, in the 2p sub - shell, one orbital has two electrons (paired) while the other two are empty, which violates Hund's rule as electrons should first occupy each 2p orbital singly with parallel spins.

Answer:

C.