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JEE MainChemistryd and f Block Elements

A metal M belongs to the 3 d transition series and exhibits the maximum number of oxidation states among its peers. The formula of the oxide of M in its highest oxidation state and the acid-base nature of this oxide are respectively:

Options

  1. AMO₃ , Acidic
  2. BM₂O₇ , Basic
  3. CM₂O₇ , Acidic
  4. DMO₂ , Amphoteric

Correct answer

C. M₂O₇ , Acidic

Step-by-step solution

The metal in the 3 d series that exhibits the maximum number of oxidation states is Manganese ( Mn ), which shows states from +2 to +7 . Therefore, the highest oxidation state of metal M is +7 . The formula of its oxide in the +7 oxidation state will be M₂O₇ (i.e., Mn₂O₇ ). In higher oxidation states, transition metal oxides are covalent and acidic in nature. Thus, M₂O₇ is an acidic oxide. Answer: M₂O₇ , Acidic

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