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5.

Ni+2 Two Br-, two NH3, and two CN

1(Ni+2) + 2(NH3) + 2(Br-) + 2(CN-) = + 1(+2) + 2(0) + 2(-1) + 2(-1) = -2  complex is anionic choose K+

Kx[Ni(NH3)2(Br)2(CN)2]

x(K+) + 1(Ni+2) + 2(NH3) + 2(Br-) + 2(CN-) = x(+1) + 1(+2) + 2(0) + 2(-1) + 2(-1) = 0 x=2

K2[Ni(NH3)2(Br)2(CN)2]

6.

Fe+3 Six CN-

1(Fe+3) + 6(CN-) = 1(+3) + 6(-1) = -3 complex is anionic choose K+

Kx[Co(Br)4]

x(K+) + 1(Fe+3) + 6(CN-) = x(+1) + 1(+3) + 6(-1) = 0 x=3

K3[Fe(CN)6]

Exercise 3:  Name the following.

15.

K4[Ni(CN)4]potassium tetracyanonickelate

16.

(NH4)3[Fe(SCN)6]ammonium hexathiocyanatoferrate(III)

17.

Na2[Ni(CN)4]sodium tetracyanonickelate(II)

18.

[Fe(ox)3]3-trioxalatoferrate(III) ion

19.

[Co(NH3)5Cl]Br2pentaamminechlorocobalt(III) bromide

20.

[Cr(OH2)4Cl2]Cltetraaquadichlorochromium(III) chloride

21.

[Pt(NH3)2]Cl2diammineplatinum(II) chloride

22.

Na2[MoOCl4]sodium tetrachlorooxomolybdate(IV)

23.

[Cr(OH2)6](NO3)3hexaaquachromium(III) nitrate

24.

[Fe(NH3)6]SO4 hexaammineiron(II) sulfate

25.

(NH4)2[CoCl4] ammonium tetrachlorocobaltate(II)

26.

Cr(NH3)4Cl2 tetraamminedichlorochromium(II)

27.

[Co(P(CH3)3)4]2(SO4)3 tetrakis(trimethylphosphine)cobalt(III) sulfate

28.

[Ni(OH2)6]Cl2 hexaaquanickel(II) chloride

Exercise 4:  Write formulas for the following.

9.

potassium hexacyanoferrate(III)K3[Fe(CN)6]

10.

sodium hexafluoroaluminateNa3[AlF6]

11.

pentaaquabromomanganese(III) sulfate[Mn(OH2)5Br]SO4

12.

hexaamminechromium(III) nitrate[Cr(NH3)6](NO3)3

13.

sodium tetrahydroxochromate(III)Na[Cr(OH)4]

14.

hexaammineruthenium(III) tetrachloronickelate(II)[Ru(NH3)6]2[NiCl4]3

15.

tetraamminecopper(II) pentacyanohydroxoferrate(III)[Cu(NH3)4]3[Fe(CN)5OH]2

16.

potassium diaquatetrabromovanadate(III)K[V(OH2)2Br4]

Exercise 5: Provide the name or chemical formula for the following complex compounds or ions.

9.

[Al (OH2)6] Br3hexaaquaaluminum bromide

10.

[Cr (NH3)6] Cl3hexaamminechromium(III) chloride

11.

potassium hexafluoroferrate (III)K3[FeF6]

12.

tetrahydroxozincate (II) ion[Zn(OH)4]-2

13.

[Co (OH2)4Cl2] Cltetraaquadichlorocobalt(III) chloride

14.

[Cu (NH3)4]+2tetraamminecopper(II) ion

15.

potassium hexachlorostannate (IV)K2[SnCl6]

16.

tetraamminedichloroplatinum (IV) hexachloroplatinate (IV)     [Pt(NH3)4Cl2][PtCl6]

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