Question

which of the following orbital diagrams violates hunds rule? a 1↓ 1↓ 1↓ 1↓ 1 b 1↓ 1↓ 1↓ 1↓ 1↓ c 1↓ 1↓ 1↓ d 1↓ 1↓ 1 1 1

Explanation:

Hund's rule states that electrons in degenerate orbitals first fill each orbital singly with parallel spins before pairing up. In option C, electrons are paired up in the third orbital before all the orbitals are singly - occupied, which violates Hund's rule.

Answer:

C