Which of these metals is not a transition element?

Name: Which of these metals is not a transition element?
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Question

Quizplus · Accepted Answer

Zn (Zinc) is not considered a transition element because it does not have partially filled d orbitals in its most common oxidation state. Transition elements are defined by their partially filled d orbitals, but zinc, in its common +2 oxidation state, has a completely filled d orbital (3d^10 configuration), distinguishing it from true transition metals.

Which of These Metals Is Not a Transition Element