CHM 431TEST 2

The ______ sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated groups.

•  ligand

• donor

• oxidation

• coordination

In coordination chemistry, the donor atom of a ligand is

•  the counter ion

• the atom in the ligand that accepts an electron pair from the metal

• the atom in the ligand that shares an electron pair with the metal.

• the central metal atom.

Consider the coordination compound, Na₂[Pt(CN)₄]. The Lewis acid is

•  Pt(CN)₄]^2-

• Na⁺

• Pt

• Pt²⁺

Consider the coordination compound, K₂[Cu(CN)₄]. A coordinate covalent bond exists between

• K⁺ and CN^-

• Cu²⁺ and CN^-

• K⁺ and [Cu(CN)₄]^2-

• K⁺ and Cu²⁺

Select the correct IUPAC name for: [FeF₄(OH₂)₂]^-

•  diaquatetrafluoroiron(III) ion

• diaquatetrafluoroiron(I) ion

• diaquatetrafluoroferrate(I) ion

• diaquatetrafluoroferrate(III) ion

Which name-formula combination is NOT correct?

• [Co(NH₃)₄(OH₂)I]SO₄

  tetraammineaquaiodocobalt(III) sulphate

• K[Cr(NH₃)₂Cl₄]

  potassium diamminetetrachlorochromate(III)

• [Mn(CN)₅]^2-

  pentacyanomanganate(II) ion

• Ca[PtCl₄]

  calcium tetrachloroplatinate(II)

What is the oxidation number of the central metal atom in the coordination compound

[Pt(NH₃)₃Cl]Cl?

• -1

• +1

• +2

• +3

Select the correct IUPAC name for: [Co(NH₃)₆]²⁺

• hexammoniacobaltate(II) ion

• hexaamminecobaltate(II) ion

• hexammoniacobalt(II) ion

• hexaamminecobalt(II) ion

Substitution reactions involving square planar complexes are

.

• Stereoselective

• Stereospecific

• Regioselective

• Regiospecific

Which of the following is a characteristic of associative mechanism?

• There is a decrease in activation volume

• There is an increase in entropy

• Rate of reaction depends on leaving group

• Rate of reaction is independent of entering group