
Concept explainers
(a)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(a)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of Chlorine
Oxidation state of Ammonia
It is assumed that the oxidation state of metal ion Ruthenium
The given complex compound contains five Ammonia ions and a Chlorine ion. Since, the overall charge on complex ion is
Therefore, the oxidation state of ruthenium is
The given complex compound contains five Ammonia ions and a Chlorine ion. Hence, the name of anion is pentaamminechloro.
Therefore, the name of complex ion
(b)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(b)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of Cyanide
It is assumed that the oxidation state of iron
The given complex compound contains six Cyanide ions and one Iron ion. Since, the overall charge on complex ion is
Therefore, the oxidation state of Iron is
The given complex compound contains six Cyanide ions. Hence, the name of anion is hexacyano. The Latin name of Iron is Ferrate.
Therefore, the name of complex ion
(c)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(c)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of neutral Ethylenediamine
It is assumed that the oxidation state of Manganese
The given complex compound contains three ethylenediamine ions and one Manganese ion. Since, the overall charge on complex ion is
Therefore, the oxidation state of Manganese is
The given complex compound contains three Ethylenediamine ions. Hence, the name of anion is triethylenediamine. The Latin name of Manganese is Manganate.
Therefore, the name of complex ion
(d)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(d)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of Nitrite
Oxidation state of neutral Ammonia
It is assumed that the oxidation state of metal ion Cobalt
The given complex compound contains five Ammonia ions and one Nitrite ion. Since, the overall charge on complex ion is
Therefore, the oxidation state of Cobalt is
The given complex compound contains five Ammonia ions and one Nitrite ion. Hence, the name of anion is pentaamminenitro.
Therefore, the name of complex ion
(e)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(e)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of cyanide
It is assumed that the oxidation state of metal ion Nickel
The given complex compound contains four Cyanide ions and one Nickel ion. Since, the overall charge on complex ion is
Therefore, the oxidation state of Nickel is
The given complex compound contains four Cyanide ions. Hence, the name of anion is tetracyano. The Latin name of Nickel is Nickelate.
Therefore, the name of complex ion
(f)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(f)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The name of complex ion
Oxidation state of Chlorine
Oxidation state of neutral Ammonia
It is assumed that the oxidation state of metal ion Chromium
The given complex compound contains four Ammonia ions and two Chlorine ions. Since, the overall charge on complex ion is
Therefore, the oxidation state of Chromium is
The given complex compound contains four Ammonia ions and two Chlorine ions. Hence, the name of anion is tetraamminedichloro.
Therefore, the name of complex ion
(g)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(g)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of Oxalate
It is assumed that the oxidation state of Iron
The given complex compound contains three Oxalate ions and one Iron ion. Since, the overall charge on complex ion is
Therefore, the oxidation state of iron is
The given complex compound contains three Oxalate ions. Hence, the name of anion is trioxalate. The Latin name of Iron is Ferrate.
Therefore, the name of complex ion
(h)
Interpretation: The name of the given complex ions is to be stated.
Concept introduction: Rules followed in the naming of coordination compound:
- In the naming of coordination compound, the name of anion (ligand) comes first. Metal ion is named second, which is the name of element.
- An ‘o’ is added to the root name of anion.
- 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.
To determine: The name of the complex ion
(h)

Answer to Problem 34E
Answer
The name of complex ion
Explanation of Solution
Explanation
The complex ion is
Oxidation state of Thiocyanate
Oxidation state of neutral Water
It is assumed that the oxidation state of metal ion cobalt
The given complex compound contains two Thiocyanate ions and four Water ions. Since, the overall charge on complex ion is
Therefore, the oxidation state of cobalt is
The given complex compound contains two Thiocyanate ions and four Water ions. Hence, the name of anion is tetraaquadithiocyanato.
Therefore, the name of complex ion
Conclusion
In the naming complex ion, anion is named first, whereas metal ion is named second.
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Chapter 20 Solutions
Chemistry: An Atoms First Approach
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