교과서 질문
A classmate says, “A weak-field ligand usually means the complex is high spin.” Is your classmate correct? Explain.
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Ch.23 - Transition Metals and Coordination Chemistry
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
23장, 문제 58
Complete the exercises below. Give the number of (valence) d electrons associated with the central metal ion in each of the following complexes: a. K₃[Fe(CN)₆] b. [Mn(H₂O)₆](NO₃)₂ c. Na[Ag(CN)₂] d. [Cr(NH₃)₄Br₂]ClO₄ e. [Sr(EDTA)]²⁻
검증된 단계별 안내1
Identify the oxidation state of the central metal ion in each complex by considering the charges of the ligands and the overall charge of the complex.
Determine the electron configuration of the neutral metal atom, focusing on the d electrons.
Subtract the number of electrons corresponding to the oxidation state from the total number of d electrons in the neutral atom to find the number of valence d electrons in the metal ion.
For each complex, apply the above steps to calculate the number of valence d electrons for the central metal ion.
Verify your results by ensuring the sum of the charges of the metal ion and the ligands equals the overall charge of the complex.
주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Valence Electrons
Valence electrons are the outermost electrons of an atom that are involved in forming bonds. For transition metals, these include the s and d electrons in the outermost shell. Understanding the number of valence electrons is crucial for determining the oxidation state of the metal ion in coordination complexes.
추천 영상:
가이드 코스
02:12
Transition Metals Valence Electrons
Coordination Complexes
Coordination complexes consist of a central metal atom or ion bonded to surrounding molecules or ions called ligands. The nature of these ligands, whether they are neutral or charged, affects the overall charge of the complex and the electron count of the central metal. Identifying the ligands and their charges is essential for calculating the d electron count.
추천 영상:
가이드 코스
00:43Coordination Complexes Example
Oxidation State
The oxidation state of a metal ion in a complex indicates the charge it carries, which influences the number of d electrons. To find the oxidation state, one must consider the charges of the ligands and the overall charge of the complex. This is vital for determining how many d electrons are present in the metal ion, as it directly affects its electronic configuration.
추천 영상:
가이드 코스
02:42Oxidation Numbers
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교과서 질문
For a given metal ion and set of ligands, is the crystal-field splitting energy larger for a tetrahedral or an octahedral geometry?
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교과서 질문
As shown in Figure 23.26, the d-d transition of [Ti(H2O)6]³⁺ produces an absorption maximum at a wavelength of about 500 nm .
a. What is the magnitude of ∆ for [Ti(H2O)6]³⁺ in kJ/mol?
b. How would the magnitude of ∆ change if the H2O ligands in [Ti(H2O)6]]³⁺ were placed with NH3 ligands?
118
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