Question:
Which of the following is not a transition metal?
Which of the following is not a transition metal?
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Transition metals must have at least one ion with a partially filled d-orbital. Fully filled d-orbitals (like in Zn\(^{2+}\)) exclude the element from being considered a transition metal.
Updated On: Apr 21, 2025
- Zn
- Fe
- Cr
- Cu
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The Correct Option is A
Solution and Explanation
A transition metal is defined as an element that has an incomplete d-subshell either in its ground state or in any of its oxidation states. - Zinc (Zn) has the electronic configuration: [Ar] 3d\(^{10}\) 4s\(^{2}\). It has a completely filled d-orbital in both its elemental and common oxidation state (+2), hence it is not a transition metal. - Iron (Fe), Chromium (Cr), and Copper (Cu) all have partially filled d-orbitals in their common oxidation states and thus qualify as transition metals.
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