Multiple Choice
What is the oxidation state of the central metal in Na2[V(C2O4)3]?
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6. Chemical Quantities & Aqueous Reactions
Calculate Oxidation Numbers
Multiple Choice
What is the oxidation state of the central metal ion in the complex [Cu(NH3)4]Br2?
A
0
B
+3
C
+2
D
+1
Verified step by step guidance1
Identify the overall charge of the complex. The complex is [Cu(NH3)4]Br2, which is neutral overall.
Determine the charge contributed by the ligands and counterions. Each bromide ion (Br) has a charge of -1, and there are two bromide ions, contributing a total charge of -2.
Recognize that ammonia (NH3) is a neutral ligand, contributing no charge to the complex.
Set up an equation to find the oxidation state of the central metal ion (Cu). Let x be the oxidation state of Cu. The equation is: x + 0 (from NH3) - 2 (from 2 Br) = 0.
Solve the equation for x to find the oxidation state of the central metal ion, Cu.
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