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d-electron count of the central metal in given complexes

This type of question, asked 2 times: 23 Jan 2025, 29 Jan 2025. All 2 questions below, oldest first.

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  1. Question 1

    23 Jan 2025

    114
    Identify the coordination complexes in which the central metal ion has d4d^{4} configuration. (A) [FeO4]2−\left\lbrack FeO_{4} \right\rbrack^{2 -} (B) [Mn(CN)6]3−\left\lbrack Mn(CN)_{6} \right\rbrack^{3 -} (C) [Fe(CN)6]3−\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -} (D) (E) [NiF6]2−\left\lbrack NiF_{6} \right\rbrack^{2 -} Choose the correct answer from the options given below :

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  2. Question 2

    29 Jan 2025

    112
    Identify the homoleptic complexes with odd number of d electrons in the central metal. (A) [FeO4]2−\left\lbrack FeO_{4} \right\rbrack^{2 -} (B) [Fe(CN)6]3−\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -} (C) [Fe(CN)5NO]2−\left\lbrack Fe(CN)_{5}NO \right\rbrack^{2 -} (D) [CoCl4]2−\left\lbrack CoCl_{4} \right\rbrack^{2 -} (E) [Co(H2O)3 F3]\left\lbrack Co\left( H_{2}O \right)_{3}{\text{ }F}_{3} \right\rbrack Choose the correct answer from the options given below :

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