Coordination Complexes Video Lessons

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Problem: Name the salt [Ni(H2O)3(CO)]SO4. The oxidation number of nickel is +2.

FREE Expert Solution


Step 1: Identify the complex ion and its counterion

Cation complex: [Ni(H2O)3(CO)]

Counter anion: SO42-

Step 2: Identify the charges of the complex ion and its counter ion

SO42- is a polyatomic anion with -2 charge

Oxidation states: [Ni(H2O)3(CO)]x → X

                            SO42- → (-2) x 1 = -2

Overall oxidation state: X + (-2) = 0

                                      X = 2+

Therefore: [Ni(H2O)3(CO)]2+

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Problem Details

Name the salt [Ni(H2O)3(CO)]SO4. The oxidation number of nickel is +2.

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