MHT CET202619 April 2026Morning ShiftChemistryCoordination CompoundsActual

What is the oxidation state of cobalt in [ Co ( NH ₃)₆]³⁺ ?

Options

Correct answer

C. +3

Step-by-step solution

Let the oxidation state of cobalt be x . Ammonia ( NH ₃ ) is a neutral ligand, so its charge is 0 . The sum of the oxidation states of all atoms in the complex ion is equal to the net charge on the ion. x + 6(0) = +3 x = +3 The oxidation state of cobalt in [ Co ( NH ₃)₆]³⁺ is +3 . Answer: +3

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