Explanation Reason for correct option In option (a) the given complex shows that P t serves as the central metal atom since it is surrounded by 4 ligands with it. The periodic table clearly shows that the outer electronic configuration of P t is 4 f 14 3 d 9 6 s 1 . The oxidation state for P t in given complex is + 2 since given complex has 4 C l and the charge of C l is − 1 which is showed as follows, [ P t Cl 4 ] 2 − Let x be charge of P t x+ ( -1 × 4 ) = -2 x − 4 = − 2 x = 2 Therefore, oxidation state of P t is +2 . Now considering the charge of metal atom the outer electrons present in the given complex is eight distributed over d orbitals in the square planar as follows, _ d x 2 − y 2 ↑ ↓ _ d z 2 ↑ ↓ _ d x y ↑ ↓ _ ↑ ↓ _ d y z d x z The above configuration clearly shows that there are no unpaired electrons so it is diamagnetic. Hence the correct option for the complex which is diamagnetic is option a. Reasons for incorrect options: In option (b) the given complex shows that N i serves as the central metal atom since it is surrounded by 4 ligands with it. The periodic table clearly shows that the outer electronic configuration of N i is 4 s 2 3 d 8 . The oxidation state for N i in given complex is + 2 since given complex has 4 C l a n d 2 N a where the charge of C l is − 1 which is showed as follows, [ N i C l 4 ] 2 − Let x be charge of N i x+ ( − 1 × 4 ) = 2 − x − 4 = 2 − x=2 Therefore, oxidation state of N i is +2 Now considering the charge of metal atom the outer electrons present in the given complex is 8 distributed over d orbitals as follows, ↑ ↓ _ ↑ _ ↑ _ d x y d y z d x z ↑ ↓ _ ↑ ↓ _ d x 2 − y 2 d z 2 The above configuration clearly shows that there are two unpaired electrons and is paramagnetic. In option (c) the given complex shows that F e serves as the central metal atom since it is surrounded by 6 ligands with it

9th Edition

ISBN: 9781133949640

Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher: Cengage Learning

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Coordination Chemistry

It is a part of chemistry, in which the study of compounds that have central atoms surrounded by molecules or ions, known as ligand, is known as coordination chemistry.

Question

Chapter 22.5, Problem 2RC

Interpretation Introduction

Interpretation: The complex which is diamagnetic is to be determined from the given option.

Concept introduction: The transition metal atoms have tendency to form complex compounds that are linked to the certain neutral or ionic species which leads to the formation of coordination compounds. There exists a large number of coordination compounds that have a large number of applications in the chemical industry as well as in daily life.

The properties of the coordination compounds depend upon the primary and secondary valancy of the metal ion in the coordination sphere. The electrical conductivity depends upon the number of ions that are produced by complex.

The strong-field ligands results in pairing of electrons present in the complex and leads to diamagnetic species , while the low-field ligand do not have tendency to pair up the electrons therefore forms paramagnetic species.

The strong field ligands lead to splitting to a higher extent than the weak field ligands and the wavelength of light absorbed depends on the energy gap that is produced by a particular ligand.

The five d orbitals get divided into two sets that is dxy, dyz and dxz orbitals forms one set and dx2-y2and dz2 forms another set. The first set are oriented between the x, y and z axes whereas the second set gets oriented along the axis.

Electronic configuration: It is defined as the distribution of electrons present in the atom over orbitals following certain rules like electrons starts filling the lower energy orbital to higher energy, pairing of electrons does not occur until all the orbitals are singly filled and finally no electrons present in orbital can have same set of quantum numbers.

Oxidation number: The total number of electrons in an atom after losing or gaining electrons to make a bond with another atom. It indicates the charge of an ion.

Expert Solution & Answer

Chapter 22 Solutions

Chemistry & Chemical Reactivity

Ch. 22.1 - Prob. 1RC Ch. 22.2 - Prob. 1Q Ch. 22.2 - 2. Describe the unit cell of austenite. Ch. 22.2 - Prob. 3Q Ch. 22.2 - Prob. 1RC Ch. 22.2 - Prob. 2RC Ch. 22.3 - (a) What is the formula of a complex ion composed...Ch. 22.3 - (a) Determine the metals oxidation number and...Ch. 22.3 - Name the following coordination compounds. (a)...Ch. 22.3 - Prob. 1RC

Ch. 22.3 - 2. What is the oxidation number of the metal in...Ch. 22.3 - Prob. 3RC Ch. 22.3 - Prob. 4RC Ch. 22.4 - What types of isomers are possible for the...Ch. 22.4 - Prob. 1RC Ch. 22.4 - Prob. 2RC Ch. 22.4 - Prob. 3RC Ch. 22.4 - Prob. 4RC Ch. 22.4 - Prob. 1Q Ch. 22.5 - Prob. 1CYU Ch. 22.5 - Prob. 1RC Ch. 22.5 - Prob. 2RC Ch. 22.6 - Prob. 1Q Ch. 22.6 - Prob. 2Q Ch. 22.6 - Prob. 3Q Ch. 22.6 - Prob. 4Q Ch. 22.6 - Prob. 1CYU Ch. 22.6 - Prob. 1RC Ch. 22.6 - How are the d electrons of Pt distributed in a...Ch. 22.6 - What are the electron configurations for Nd and...Ch. 22.6 - Prob. 3CS Ch. 22.6 - Prob. 4CS Ch. 22.6 - Prob. 5CS Ch. 22 - Prob. 1PS Ch. 22 - Prob. 2PS Ch. 22 - Identify a cation of a first series transition...Ch. 22 - Match up the isoelectronic ions on the following...Ch. 22 - Prob. 5PS Ch. 22 - Prob. 6PS Ch. 22 - Which of the following ligands is expected to be...Ch. 22 - One of the following nitrogen compounds or ions is...Ch. 22 - Prob. 9PS Ch. 22 - Prob. 10PS Ch. 22 - Prob. 11PS Ch. 22 - Prob. 12PS Ch. 22 - Prob. 13PS Ch. 22 - Prob. 14PS Ch. 22 - Prob. 15PS Ch. 22 - Prob. 16PS Ch. 22 - Give the name or formula for each ion or compound,...Ch. 22 - Prob. 18PS Ch. 22 - Prob. 19PS Ch. 22 - Prob. 20PS Ch. 22 - Prob. 21PS Ch. 22 - Prob. 22PS Ch. 22 - Prob. 23PS Ch. 22 - Prob. 24PS Ch. 22 - Prob. 25PS Ch. 22 - Prob. 26PS Ch. 22 - Prob. 27PS Ch. 22 - Prob. 28PS Ch. 22 - Prob. 29PS Ch. 22 - Prob. 30PS Ch. 22 - In water, the titanium(III) ion, [Ti(H2O)6]3+, has...Ch. 22 - Prob. 32PS Ch. 22 - Prob. 33GQ Ch. 22 - Prob. 34GQ Ch. 22 - How many unpaired electrons are expected for...Ch. 22 - Prob. 36GQ Ch. 22 - Which of the following complex ions is (are)...Ch. 22 - Prob. 38GQ Ch. 22 - How many geometric isomers are possible for the...Ch. 22 - For a tetrahedral complex of a metal in the first...Ch. 22 - Prob. 41GQ Ch. 22 - Prob. 42GQ Ch. 22 - Prob. 43GQ Ch. 22 - A platinum-containing compound, known as Magnuss...Ch. 22 - Prob. 45GQ Ch. 22 - Prob. 46GQ Ch. 22 - Prob. 47GQ Ch. 22 - How many geometric isomers of the complex ion...Ch. 22 - Prob. 49GQ Ch. 22 - Prob. 50GQ Ch. 22 - Prob. 51GQ Ch. 22 - The square-planar complex Pt(en)Cl2 has chloride...Ch. 22 - The complex [Mn(H2O)6]2+ has five unpaired...Ch. 22 - Experiments show that K4[Cr(CN)6] is paramagnetic...Ch. 22 - Give a systematic name or the formula for the...Ch. 22 - When CrCI3 dissolves in water, three different...Ch. 22 - Prob. 57GQ Ch. 22 - The glycinate ion, H2NCH2CO2, formed by...Ch. 22 - Prob. 59GQ Ch. 22 - Nickel and palladium both form complexes of the...Ch. 22 - The transition metals form a class of compounds...Ch. 22 - Cerium, as noted in Applying Chemical Principles:...Ch. 22 - Prob. 64GQ Ch. 22 - Two different coordination compounds containing...Ch. 22 - Prob. 71SCQ Ch. 22 - Prob. 69SCQ Ch. 22 - Prob. 70SCQ

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