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Match List-I with List-II. List-I (Complex) A. [Ti(H2O)6]2+ B. [V(H2O)6]2+ C. [Mn(H2O)6]3+ D. [Fe(H2O)6]3+ List-II (Crystal Field splitting energy (Δo)) I. -1.2 II. -0.6 III. 0 IV. -0.8 Choose the correct answer from the options given below:

1. A-II, B-IV, C-I, D-III
2. A-IV, B-I, C-III, D-II
3. A-IV, B-I, C-II, D-III
4. A-II, B-IV, C-III, D-I

Correct answer: A-IV, B-I, C-II, D-III

Solution

The correct option matches each complex with its corresponding crystal field splitting energy based on the oxidation states and the nature of the metal ions. For example, [Ti(H2O)6]2+ has a lower Δo due to its lower oxidation state, while [Fe(H2O)6]3+ has a higher Δo due to its higher oxidation state, reflecting the expected trends in crystal field theory.

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