Problem: What is the oxidation number of the central metal ion in each of the following complexes?A. [NiF2Br2]2-B. [Cr(H2O)2(NH3)4]3+C. Na[Hg(CN)2]

FREE Expert Solution

Determining the oxidation number of metal ion in the complex ion:


A. [NiF2Br2]2-

• Charge of complex ion → – 2
• F Group 7A – 1 charge F-
• Br Group 7A – 1 charge Br-

charge of complex ion = charge of metal ion charge of ligand

– 2 = Ni + 2 (–1) + 2 (–1)

– 2 = Ni + (–2) + (–2)

– 2 = Ni – 4

Ni = – 2 + 4

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Problem Details

What is the oxidation number of the central metal ion in each of the following complexes?

A. [NiF2Br2]2-

B. [Cr(H2O)2(NH3)4]3+

C. Na[Hg(CN)2]

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