Coordination Compounds

Bihar Board Class 12 · Chemistry · 33 past questions

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1. Q1 2026 Set A2024 Set D

   The oxidation state of Ni in Ni (CO)$_4$ is

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2. Q5 2025 Set D

   The oxidation state of Fe in $K_4[Fe(CN)_6]$ is

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3. Q21 2021 Set A

   The oxidation number of Cr in the complex $[Cr(H_2O)_4Cl_2]^+$ is

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4. Q22 2021 Set A

   In co-ordination compound $K_4[Ni(CN)_4]$, the oxidation state of nickel is

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5. Q25 2019 Set D

   The oxidation number of Fe in K$_4$[Fe(CN)$_6$] is -

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