Which of the following configurations follows | vedclass

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(D) Hund's rule of maximum multiplicity states that for a given electron configuration,the term with maximum multiplicity has the lowest energy. There

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(D) Hund's rule of maximum multiplicity states that for a given electron configuration,the term with maximum multiplicity has the lowest energy. Therefore,in degenerate orbitals (like $p$-orbitals),electrons fill each orbital singly with parallel spins before pairing begins. Option $A$ violates the rule because the spins are not parallel in the singly occupied orbitals. Option $B$ violates the rule because pairing occurs before all orbitals are singly occupied. Option $C$ violates the rule because the third electron is paired with an opposite spin before the second orbital is singly occupied. Option $D$ correctly shows two electrons in separate $p$-orbitals with parallel spins,which is in accordance with Hund's rule.

Which of the following configurations follows Hund's rule?

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