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Coordination Compounds — Easy JEE chemistry MCQ

In the complex [Co(NH₃)₅Cl]Cl₂, the oxidation state and coordination number of cobalt are respectively:
  1. A. +3 and 6
  2. B. +2 and 6
  3. C. +3 and 5
  4. D. +2 and 5

Solution

Let oxidation state of Co be x. x + 5(0) + (-1) + 2(-1) = 0, so x = +3. The coordination number is 6 (5 NH₃ + 1 Cl inside the coordination sphere).

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In the complex [Co(NH₃)₅Cl]Cl₂, the oxidation state and coordination number of cobalt are respectively:
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Coordination Compounds — Easy JEE Chemistry MCQ | MyGoalPrep