Concept explainers
(a)
Interpretation: The formulas of the given complex compounds are to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- Greek prefix is used to express the number of ligands.
- Roman numeral is used to denote the oxidation state of metal ion.
- In case of more than one type of ligand present in a compound, they are named alphabetically.
- The suffix ‘-ate’ is added to metal ion if complex ion contains negative charge. Latin names are also used to identify the name of metals.
- If counter ions are present in complex compound, then cation is named first which is the name of element, whereas anion is named last which is the name of salt.
To determine: The formula of the complex compound potassium tetrachlorocobaltate(II).
(b)
Interpretation: The formulas of the given complex compounds are to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- Greek prefix is used to express the number of ligands.
- Roman numeral is used to denote the oxidation state of metal ion.
- In case of more than one type of ligand present in a compound, they are named alphabetically.
- The suffix ‘-ate’ is added to metal ion if complex ion contains negative charge. Latin names are also used to identify the name of metals.
- If counter ions are present in complex compound, then cation is named first which is the name of element, whereas anion is named last which is the name of salt.
To determine: The formula of the complex compound aquatricarbonylplatinum(II) bromide.
(c)
Interpretation: The formulas of the given complex compounds are to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- Greek prefix is used to express the number of ligands.
- Roman numeral is used to denote the oxidation state of metal ion.
- In case of more than one type of ligand present in a compound, they are named alphabetically.
- The suffix ‘-ate’ is added to metal ion if complex ion contains negative charge. Latin names are also used to identify the name of metals.
- If counter ions are present in complex compound, then cation is named first which is the name of element, whereas anion is named last which is the name of salt.
To determine: The formula of the complex compound sodium dicyanobis(oxalato)ferrate(III).
(d)
Interpretation: The formulas of the given complex compounds are to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- Greek prefix is used to express the number of ligands.
- Roman numeral is used to denote the oxidation state of metal ion.
- In case of more than one type of ligand present in a compound, they are named alphabetically.
- The suffix ‘-ate’ is added to metal ion if complex ion contains negative charge. Latin names are also used to identify the name of metals.
- If counter ions are present in complex compound, then cation is named first which is the name of element, whereas anion is named last which is the name of salt.
To determine: The formula of the complex compound triamminechloroethylenediaminechromium(III) iodide
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Chapter 21 Solutions
Chemistry
- For each d electron configuration, state the number of unpaired electrons expected in octahedral complexes. Give an example complex for each case. (Two answers are possible for some of these cases.) (a) d2 (b) d4 (c) d6 (d) d8arrow_forwardWhich of the following statement(s) is( are) true? a. The coordination number of a metal ion in an octahedral complex ion is 8. b. All tetrahedral complex ions are low-spin. c. The formula for triaquatrianuninechromiwn(III) sulfate is [Cr(H2O)3(NH3)](SO4)3. d. The electron configuration of Hf2+ is [Xe]4f126s2. e. Hemoglobin contains Fe3+.arrow_forwardChelating ligands often form more stable complex ions than the corresponding monodentate ligands with the same donor atoms. For example, Ni2+(aq)+6NH3(aq)Ni(NH3)62+(aq)K=3.2108Ni2+(aq)+3en(aq)Ni(en)32+(aq)K=1.61018Ni2+(aq)+penten(aq)Ni(penten)2+(aq)K=2.01019 where en is ethylenediamine and penten is This increased stability is called the chelate effect. Based on bond energies, would you expect the enthalpy changes for the above reactions to be very different? What is the order (from least favorable to most favorable) of the entropy changes for the above reactions? How do the values of the formation constants correlate with S? How can this be used to explain the chelate effect?arrow_forward
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