menu
bartleby
search
close search
Hit Return to see all results
close solutoin list

The crystal field model predicts magnetic properties of complex ions and explains the colors of these complex ions. How? Solutions of [Cr(NH 3 ) 6 ]Cl 3 are yellow, but Cr(NH 3 ) 6 3+ does not absorb yellow light. Why? What color light is absorbed by Cr(NH 3 ) 6 3+ ? What is the spectrochemical series, and how can the study of light absorbed by various complex ions be used to develop this series? Would you expect Co(NH 3 ) 6 2+ to absorb light of a longer or shorter wavelength than Co(NH 3 ) 6 3+ ? Explain.

BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 20, Problem 7RQ
Textbook Problem
1 views

The crystal field model predicts magnetic properties of complex ions and explains the colors of these complex ions. How? Solutions of [Cr(NH3)6]Cl3 are yellow, but Cr(NH3)63+ does not absorb yellow light. Why? What color light is absorbed by Cr(NH3)63+? What is the spectrochemical series, and how can the study of light absorbed by various complex ions be used to develop this series? Would you expect Co(NH3)62+ to absorb light of a longer or shorter wavelength than Co(NH3)63+? Explain.

Interpretation Introduction

Interpretation: The reason for the crystal field model predicting the magnetic properties of the complex ions and the colors of the complex ions; the reason for the yellow color of Cr(NH3)3+ by not absorbing the yellow color; the meaning of the spectrochemical series and the reason for development of the spectrochemical series by the study of light absorbed by different complex ions; and comparison of the wavelength absorbed by Co(NH3)2+ with that by Co(NH3)3+ is to be stated.

Concept introduction: If the electrons in the hybridized orbital are all paired, the magnetic property of each electron is nullified by the magnetic field of its pair. Thus, the complex is repelled by the magnetic field and the complex is said to exhibit diamagnetism.

Coordination complex exhibits coloration due to dd transition of electrons.

The spectrochemical series is the series of the ligand arranged in the decreasing order of their ability to split the crystal field and absorb the equivalent energy for dd transition.

Ligands are the electron donating group, therefore, are attracted by the positively charged transition metal. Thus, more the oxidation number of a metal ion, more will be the strength of attraction of ligand and more will be the crystal field energy gap created by the ligand.

To determine: The reason for the crystal field model predicting the magnetic properties of the complex ions and the colors of the complex ions; the reason for the yellow color of Cr(NH3)3+ by not absorbing the yellow color; the meaning of the spectrocheminal series and the reason for development of the spectrochemical series by the study of light absorbed by different complex ions; and comparison of the wavelength absorbed by Co(NH3)2+ with that by Co(NH3)3+ .

Explanation of Solution

Explanation

The electrons exhibit magnetic property due to its charge and spin motion. Thus, a coordination complex exhibits magnetism arising from the electrons present in the hybridized orbitals of the complex.

If the electrons in the hybridized orbital are all paired, the magnetic property of each electron is nullified by the magnetic field of its pair. Thus, the complex is repelled by the magnetic field and the complex is said to exhibit diamagnetism.

If some of the electrons in the hybridized orbital are unpaired, the net magnetic property of the electrons due to its spin results the attraction of the complex by the magnetic field and the complex is said to be exhibit paramagnetism.

The strong ligands when binds to the transition metal ions to form coordination complex, it splits the energy of the dorbital into lower and higher energy level and the electrons excite from the lower to the higher energy level by absorption of visible light energy and emit the complementary energy. Thus, coordination complex exhibit coloration due to dd transition.

The color of coordination complex ion, Cr(NH3)3+ is yellow. Thus, the electrons Cr(NH3)3+ absorbs the complimentary light of yellow, that is violet, and excite to the higher energy level. While coming back to the lower energy level, the electrons emit yellow energy. Thus, the color of the complex visible is yellow.

The spectrochemical series is the series of the ligand arranged in the decreasing order of their ability to split the crystal field and absorb the equivalent energy for dd transition

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 20 Solutions

Chemistry: An Atoms First Approach
Show all chapter solutions
add
Ch. 20 - You isolate a compound with the formula PtCl4 ...Ch. 20 - Both Ni(NH3)42+ and Ni(SCN)42 have four ligands....Ch. 20 - Which is more likely to be paramagnetic, Fe(CN)64...Ch. 20 - A metal ion in a high-spin octahedral complex has...Ch. 20 - What is the lanthanide contraction? How does the...Ch. 20 - Four different octahedral chromium coordination...Ch. 20 - Figure 20-17 shows that the cis isomer of...Ch. 20 - A certain first-row transition metal ion forms...Ch. 20 - Oxalic acid is often used to remove rust stains....Ch. 20 - For the following crystal field diagrams, label...Ch. 20 - CoCl42 forms a tetrahedral complex ion and...Ch. 20 - The following statements discuss some coordination...Ch. 20 - When concentrated hydrochloric acid is added to a...Ch. 20 - Tetrahedral complexes of Co2+ are quite common....Ch. 20 - Which of the following ligands are capable of...Ch. 20 - Compounds of copper(II) are generally colored, but...Ch. 20 - Compounds of Sc3+ are not colored, but those of...Ch. 20 - Almost all metals in nature are found as ionic...Ch. 20 - What causes high-altitude sickness, and what is...Ch. 20 - Why are CN and CO toxic to humans?Ch. 20 - Write electron configurations for the following...Ch. 20 - Write electron configurations for the following...Ch. 20 - Write electron configurations for each of the...Ch. 20 - Write electron configurations for each of the...Ch. 20 - What is the electron configuration for the...Ch. 20 - What is the electron configuration for the...Ch. 20 - Molybdenum is obtained as a by-product of copper...Ch. 20 - Titanium dioxide, the most widely used white...Ch. 20 - When 6 M ammonia is added gradually to aqueous...Ch. 20 - When an aqueous solution of KCN is added to a...Ch. 20 - Consider aqueous solutions of the following...Ch. 20 - A coordination compound of cobalt(III) contains...Ch. 20 - Name the following complex ions: a. b. c.Ch. 20 - Name the following complex ions. a. Ru(NH3)5Cl2+...Ch. 20 - Name the following coordination compounds. a....Ch. 20 - Name the following coordination compounds. a....Ch. 20 - Give formulas for the following. a. potassium...Ch. 20 - Give formulas for the following complex ions. a....Ch. 20 - Draw geometrical isomers of each of the following...Ch. 20 - Draw structures of each of the following. a....Ch. 20 - The carbonate ion (CO32) can act as either a...Ch. 20 - Amino acids can act as ligands toward transition...Ch. 20 - How many bonds could each of the following...Ch. 20 - BAL is a chelating agent used in treating heavy...Ch. 20 - Draw all geometrical and linkage isomers of...Ch. 20 - Draw all geometrical and linkage isomers of square...Ch. 20 - Acetylacetone, abbreviated acacH, is a bidentate...Ch. 20 - Draw all geometrical isomers of Pt(CN)2Br2(H2O)2....Ch. 20 - Match the crystal field diagrams given below with...Ch. 20 - Match the crystal field diagrams given below with...Ch. 20 - Draw the d-orbital splitting diagrams for the...Ch. 20 - Draw the d-orbital splitting diagrams for the...Ch. 20 - The CrF64 ion is known to have four unpaired...Ch. 20 - The Co(NH3)63+ ion is diamagnetic, but Fe(H2O)62+...Ch. 20 - How many unpaired electrons are in the following...Ch. 20 - The complex ion Fe(CN)63 is paramagnetic with one...Ch. 20 - Rank the following complex ions in order of...Ch. 20 - The complex ion Cu(H2O)62+ has an absorption...Ch. 20 - The following test tubes each contain a different...Ch. 20 - Consider the complex ions Co(NH3)63+, Co(CN)63,...Ch. 20 - The wavelength of absorbed electromagnetic...Ch. 20 - The complex ion NiCL42 has two unpaired electrons,...Ch. 20 - How many unpaired electrons are present in the...Ch. 20 - The complex ion PdCl42is diamagnetic. Propose a...Ch. 20 - A blast furnace is used to reduce iron oxides to...Ch. 20 - Use the data in Appendix 4 for the following. a....Ch. 20 - Iron is present in the earths crust in many types...Ch. 20 - What roles do kinetics and thermodynamics play in...Ch. 20 - Silver is sometimes found in nature as large...Ch. 20 - One of the classic methods for the determination...Ch. 20 - Acetylacetone (see Exercise 43, part a),...Ch. 20 - The compound cisplatin, Pt(NH3)2Cl2, has been...Ch. 20 - Use standard reduction potentials to calculate ,...Ch. 20 - Until the discoveries of Alfred Werner, it was...Ch. 20 - Draw all the geometrical isomers of...Ch. 20 - A compound related to acetylacetone is...Ch. 20 - Would it be better to use octahedral Ni2+...Ch. 20 - Name the following coordination compounds. a....Ch. 20 - give formulas for the following. a....Ch. 20 - The complex ion Ru(phen)32+ has been used as a...Ch. 20 - Carbon monoxide is toxic because it binds more...Ch. 20 - For the process Co(NH3)5Cl2++ClCO(NH3)4Cl2++NH3...Ch. 20 - In which of the following is(are) the electron...Ch. 20 - Which of the following molecules exhibit(s)...Ch. 20 - Which of the following ions is( are) expected to...Ch. 20 - The following table indicates the number of...Ch. 20 - Which of the following crystal field diagram(s)...Ch. 20 - Which of the following statement(s) is( are) true?...Ch. 20 - Consider the following complex ion, where A and B...Ch. 20 - Consider the pseudo-octahedral complex ion of...Ch. 20 - Consider the following data: where en =...Ch. 20 - Henry Taube, 1983 Nobel Prize winner in chemistry,...Ch. 20 - Chelating ligands often form more stable complex...Ch. 20 - Qualitatively draw the crystal field splitting of...Ch. 20 - Qualitatively draw the crystal field splitting for...Ch. 20 - Sketch a d-orbital energy diagram for the...Ch. 20 - Sketch and explain the most likely crystal field...Ch. 20 - The ferrate ion, FeO42, is such a powerful...Ch. 20 - Ammonia and potassium iodide solutions are added...Ch. 20 - a. In the absorption spectrum of the complex ion...Ch. 20 - There are three salts that contain complex ions of...

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
What is the nuclide symbol for the nucleus that contains 11 protons and 12 neutrons?

General Chemistry - Standalone book (MindTap Course List)

Which of the following is fare) rich source(s) of vitamin E7 raw vegetable oil colorful foods, such as carrots ...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What is hereditarianism, and what is the invalid assumption it makes?

Human Heredity: Principles and Issues (MindTap Course List)

A metal wire of resistance R is cut into three equal pieces that are then placed together side by side to form ...

Physics for Scientists and Engineers, Technology Update (No access codes included)