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Question

Which d-block element in period 5 exhibits the highest oxidation state of +7?

Options

Choose one · Correct answer highlighted

Explanation

In period 5 d-block (Y to Cd), Tc (group 7) achieves a +7 oxidation state (e.g., in Tc₂O₇) due to the availability of d-electrons, unlike Zr, Nb, or Mo.