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Chemistry

10th Edition
Steven S. Zumdahl + 2 others
Publisher: Cengage Learning
ISBN: 9781305957404
BuyFind

Chemistry

10th Edition
Steven S. Zumdahl + 2 others
Publisher: Cengage Learning
ISBN: 9781305957404

Solutions

Chapter
Section
Chapter 21, Problem 57E
Textbook Problem

How many unpaired electrons are in the following complex ions?

a. Ru(NH3)62+ (low-spin case)

b. Ni(H2O)62+

c. V(en)33+

Expert Solution

(a)

Interpretation Introduction

Interpretation: The number of unpaired electrons in the given complex ions is to be calculated.

Concept introduction: Weak field ligand that has small crystal field splitting energy gives high spin due to the presence of maximum unpaired electrons in lower energy t2g orbitals and higher energy orbitals.

Strong field ligand that has large crystal field splitting energy gives low spin due to the presence of maximum paired electrons in lower energy t2g orbitals.

To determine: The number of unpaired electrons in Ru(NH3)62+ (low spin).

Explanation of Solution

Explanation

The oxidation state of Ruthenium in Ru(NH3)62+ is +2 .

In the complex ion Ru(NH3)62+ , NH3 is a strong field ligand and its oxidation state is zero.

It is assumed that the oxidation state of metal ion Ruthenium (Ru) is x .

The given complex compound contains six ammonia molecules. Since, the overall charge on the complex ion is +2 . Therefore,

6(0)+x=+2x=+2

Therefore, the oxidation state of Ruthenium is +2 .

Complex ion Ru(NH3)62+ does not contain any unpaired electron.

The atomic number of Ruthenium is 44 and its electronic configuration is,

[Kr]4d75s1

It loses two electrons to acquire two positive charge and becomes Ru2+

Expert Solution

(b)

Interpretation Introduction

Interpretation: The number of unpaired electrons in the given complex ions is to be calculated.

Concept introduction: Weak field ligand that has small crystal field splitting energy gives high spin due to the presence of maximum unpaired electrons in lower energy t2g orbitals and higher energy orbitals.

Strong field ligand that has large crystal field splitting energy gives low spin due to the presence of maximum paired electrons in lower energy t2g orbitals.

To determine: The number of unpaired electrons in Ni(H2O)62+ .

Expert Solution

(c)

Interpretation Introduction

Interpretation: The number of unpaired electrons in the given complex ions is to be calculated.

Concept introduction: Weak field ligand that has small crystal field splitting energy gives high spin due to the presence of maximum unpaired electrons in lower energy t2g orbitals and higher energy orbitals.

Strong field ligand that has large crystal field splitting energy gives low spin due to the presence of maximum paired electrons in lower energy t2g orbitals.

To determine: The number of unpaired electrons in V(en)33+ .

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Chapter 21 Solutions

Chemistry
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Ch. 21 - You isolate a compound with the formula PtCl4 ...Ch. 21 - Both Ni(NH3)42+ and Ni(SCN)42 have four ligands....Ch. 21 - Which is more likely to be paramagnetic, Fe(CN)64...Ch. 21 - A metal ion in a high-spin octahedral complex has...Ch. 21 - What is the lanthanide contraction? 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Ru(NH3)5Cl2+...Ch. 21 - Name the following coordination compounds. a....Ch. 21 - Name the following coordination compounds. a....Ch. 21 - Give formulas for the following. a. potassium...Ch. 21 - Give formulas for the following complex ions. a....Ch. 21 - Draw geometrical isomers of each of the following...Ch. 21 - Draw structures of each of the following. a....Ch. 21 - The carbonate ion (CO32) can act as either a...Ch. 21 - Amino acids can act as ligands toward transition...Ch. 21 - How many bonds could each of the following...Ch. 21 - BAL is a chelating agent used in treating heavy...Ch. 21 - Draw all geometrical and linkage isomers of...Ch. 21 - Draw all geometrical and linkage isomers of square...Ch. 21 - Acetylacetone, abbreviated acacH, is a bidentate...Ch. 21 - Draw all geometrical isomers of Pt(CN)2Br2(H2O)2....Ch. 21 - Match the crystal field diagrams given below with...Ch. 21 - Match the crystal field diagrams given below with...Ch. 21 - Draw the d-orbital splitting diagrams for the...Ch. 21 - Draw the d-orbital splitting diagrams for the...Ch. 21 - The CrF64 ion is known to have four unpaired...Ch. 21 - The Co(NH3)63+ ion is diamagnetic, but Fe(H2O)62+...Ch. 21 - How many unpaired electrons are in the following...Ch. 21 - The complex ion Fe(CN)63 is paramagnetic with one...Ch. 21 - Rank the following complex ions in order of...Ch. 21 - The complex ion Cu(H2O)62+ has an absorption...Ch. 21 - The following test tubes each contain a different...Ch. 21 - Consider the complex ions Co(NH3)63+, Co(CN)63,...Ch. 21 - The wavelength of absorbed electromagnetic...Ch. 21 - The complex ion NiCL42 has two unpaired electrons,...Ch. 21 - How many unpaired electrons are present in the...Ch. 21 - The complex ion PdCl42is diamagnetic. Propose a...Ch. 21 - A blast furnace is used to reduce iron oxides to...Ch. 21 - Use the data in Appendix 4 for the following. a....Ch. 21 - Iron is present in the earths crust in many types...Ch. 21 - What roles do kinetics and thermodynamics play in...Ch. 21 - Silver is sometimes found in nature as large...Ch. 21 - One of the classic methods for the determination...Ch. 21 - When aqueous KI is added gradually to mercury(II)...Ch. 21 - The following statements discuss some coordination...Ch. 21 - Acetylacetone (see Exercise 43, part a),...Ch. 21 - The compound cisplatin, Pt(NH3)2Cl2, has been...Ch. 21 - Use standard reduction potentials to calculate ,...Ch. 21 - Until the discoveries of Alfred Werner, it was...Ch. 21 - Draw all the geometrical isomers of...Ch. 21 - A compound related to acetylacetone is...Ch. 21 - Would it be better to use octahedral Ni2+...Ch. 21 - Name the following coordination compounds. a....Ch. 21 - give formulas for the following. a....Ch. 21 - The complex ion Ru(phen)32+ has been used as a...Ch. 21 - Consider aqueous solutions of the following...Ch. 21 - The equilibrium constant Ku for the reaction...Ch. 21 - Carbon monoxide is toxic because it binds more...Ch. 21 - For the process Co(NH3)5Cl2++ClCO(NH3)4Cl2++NH3...Ch. 21 - In which of the following is(are) the electron...Ch. 21 - Which of the following molecules exhibit(s)...Ch. 21 - Which of the following ions is( are) expected to...Ch. 21 - The following table indicates the number of...Ch. 21 - Which of the following crystal field diagram(s)...Ch. 21 - Which of the following statement(s) is( are) true?...Ch. 21 - Consider the following complex ion, where A and B...Ch. 21 - Consider the pseudo-octahedral complex ion of...Ch. 21 - Consider the following data: where en =...Ch. 21 - Henry Taube, 1983 Nobel Prize winner in chemistry,...Ch. 21 - Chelating ligands often form more stable complex...Ch. 21 - Qualitatively draw the crystal field splitting of...Ch. 21 - Qualitatively draw the crystal field splitting for...Ch. 21 - Sketch a d-orbital energy diagram for the...Ch. 21 - Sketch and explain the most likely crystal field...Ch. 21 - Ethylenediaminetetraacetate (EDTA4 ) is used as a...Ch. 21 - Will 0.10 mol of AgBr completely dissolve in 1.0 L...Ch. 21 - The ferrate ion, FeO42, is such a powerful...Ch. 21 - Ammonia and potassium iodide solutions are added...Ch. 21 - a. In the absorption spectrum of the complex ion...Ch. 21 - There are three salts that contain complex ions of...

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