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. Q2 2026 Set A

   The number of ions in aqueous solution of [Co(NH$_3$)$_5$Cl]Cl$_2$ is

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3. Q3 2026 Set A

   $[Co(NH_3)_5Br]SO_4$ and $[Co(NH_3)_5SO_4]Br$ are related to each other as

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4. Q4 2026 Set A

   Vitamin $B_{12}$ contains

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