Question

What is the coordination number for each of the following complexes or compounds?

1. [Co(NH3)4(H2O)2]3+[Co(NH3)4(H2O)2]3+
2. [Mg(EDTA)]2−[Mg(EDTA)]2−
3. [Cu(NH3)4]2+[Cu(NH3)4]2+
4. [Ag(NH3)2]NO3[Ag(NH3)2]NO3

Enter the coordination numbers, in the order that the complexes are listed, as four integers separated by commas (e.g., 1,2,3,4).

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Part B

What is the charge on each of the following complex ions?

1. hexaaquamanganese(II), [Mn(H2O)6]?[Mn(H2O)6]?
2. tris(carbonato)cobaltate(III), [Co(CO3)3]?[Co(CO3)3]?
3. amminepentabromoplatinate(IV), [Pt(NH3)Br5]?[Pt(NH3)Br5]?

Express the charges numerically, in the order that the complexes are listed, separated by commas. For a nonzero charge, be sure to include the sign (e.g., +1,-2,+3).

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Part C

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

1. [NiCl2Br2]2−[NiCl2Br2]2−
2. [Cr(H2O)2(NH3)4]3+[Cr(H2O)2(NH3)4]3+
3. Na[Ag(CN)2]Na[Ag(CN)2]

Express the oxidation numbers numerically, in the order that the complexes are listed, separated by commas. For a nonzero oxidation number, be sure to include the sign (e.g., +1,-2,+3).

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Answer 1