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JEE MainChemistryd and f Block Elements

Consider the following statements regarding the oxidation states and properties of transition elements: (A) Iron exhibits a +6 oxidation state in the ferrate ion ( FeO ₄²⁻ ), which is strongly oxidising in nature. (B) Titanium shows a +4 oxidation state which is strongly oxidising in nature. (C) The highest oxidation state of manganese is +7 , which is realised in its fluoride ( MnF ₇ ). (D) Vanadium exhibits a +5 ox

Options

  1. A(A) and (D) only
  2. B(A), (B) and (D) only
  3. C(C) and (D) only
  4. D(A), (C) and (D) only

Correct answer

A. (A) and (D) only

Step-by-step solution

(A) is correct. Iron can exhibit a +6 oxidation state in ferrates (like FeO ₄²⁻ ), which are very strong oxidising agents. (B) is incorrect. Titanium in its +4 oxidation state has a stable d^0 noble gas core configuration and is not an oxidising agent. (C) is incorrect. The highest fluoride of manganese is MnF ₄ . The +7 oxidation state is not realised in fluorides, but it is realised in its oxide ( Mn ₂ O ₇ ) due to the ability of oxygen to form multiple bonds. (D) is correct. Vanadium in V ₂ O ₅ is in the +5 oxid

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