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e and t2 configuration or CFSE of tetrahedral complexes

This type of question, asked 4 times: 24 Jan 2023, 5 Apr 2024, 6 Apr 2024, 6 Apr 2026 S1. All 4 questions below, oldest first.

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  1. Question 1

    24 Jan 2023

    59
    The d-electronic configuration of [CoCl4]2−\left\lbrack CoCl_{4} \right\rbrack^{2 -} in tetrahedral crystal field is emt2ne^{m}t_{2}^{n}. Sum of "m" and "number of unpaired electrons" is

  2. Question 2

    5 Apr 2024

    136
    The number of complexes from the following with no electrons in the t2t_{2} orbital is ____ .
    TiCl4,[MnO4]−,[FeO4]2−,[FeCl4]−,[CoCl4]2−TiCl_{4},\left\lbrack MnO_{4} \right\rbrack^{-},\left\lbrack FeO_{4} \right\rbrack^{2 -},\left\lbrack FeCl_{4} \right\rbrack^{-},\left\lbrack CoCl_{4} \right\rbrack^{2 -}

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  3. Question 3

    6 Apr 2024

    139
    Match List-I with List-II LIST- I LIST- II Tetrahedral Complex Electronic configuration (A) TiCl4TiCl_{4} (I) e2,t20e^{2},t_{2}^{0} (B) [FeO4]2−\left\lbrack FeO_{4} \right\rbrack^{2 -} (II) e4,t23e^{4},t_{2}^{3} (C) [FeCl4]−\left\lbrack FeCl_{4} \right\rbrack^{-} (III) e0,t20e^{0},t_{2}^{0} (D) [CoCl4]2−\left\lbrack CoCl_{4} \right\rbrack^{2 -} (IV) e2,t23e^{2},t_{2}^{3} Choose the correct answer from the option given below:

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  4. Question 4

    6 Apr 2026 S1

    36
    Match List-I with List-II
    List-I Electronic configuration of tetrahedral metal ionList-II Crystal Field Stabilization Energy(Δt)\left( \Delta_{t} \right)
    (A)
    d2d^{2}
    		(I)-0.6
    (B)
    d4d^{4}
    		(II)-0.8
    (C)
    d6d^{6}
    		(III)-1.2
    (D)
    d8d^{8}
    		(IV)-0.4
    Choose the correct answer from the options given below :

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