Domanda del libro di testo
What is the lanthanide contraction, and why does it occur?
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Ch.21 - Transition Elements and Coordination Chemistry
McMurry8th EditionChemistryISBN: 9781292336145
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TOC.tableOfContents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
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McMurry 8th EditionCh.21 - Transition Elements and Coordination ChemistryProblema 49
McMurry 8th EditionCh.21 - Transition Elements and Coordination ChemistryProblema 49Capitolo 21, Problema 49
Which element is more easily oxidized, Sc or Co?
Guida verificata passo dopo passo1
Step 1: Understand the concept of oxidation. Oxidation refers to the loss of electrons by an atom, ion, or molecule. In the context of elements, the more easily an element loses electrons, the more easily it is oxidized.
Step 2: Consider the position of Scandium (Sc) and Cobalt (Co) in the periodic table. Scandium is located in Group 3 and is a transition metal, while Cobalt is in Group 9, also a transition metal.
Step 3: Examine the standard electrode potentials for Sc and Co. The standard electrode potential indicates the tendency of a species to be reduced; the more negative the potential, the more easily the species is oxidized.
Step 4: Compare the standard electrode potentials of Sc and Co. Scandium typically has a more negative standard electrode potential compared to Cobalt, indicating that Scandium is more easily oxidized.
Step 5: Conclude that based on the standard electrode potentials, Scandium (Sc) is more easily oxidized than Cobalt (Co).
Concetti chiave
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Oxidation and Reduction
Oxidation refers to the loss of electrons by an atom or ion, while reduction is the gain of electrons. In redox reactions, one species is oxidized and another is reduced. Understanding these processes is crucial for determining which element is more easily oxidized, as it involves comparing their tendencies to lose electrons.
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01:53
Oxidation and Reduction Reactions
Electronegativity
Electronegativity is a measure of an atom's ability to attract and hold onto electrons. Elements with lower electronegativity values tend to lose electrons more easily, making them more susceptible to oxidation. Comparing the electronegativities of Scandium (Sc) and Cobalt (Co) helps predict which element is more likely to be oxidized.
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02:10Electronegativity Trends
Standard Reduction Potentials
Standard reduction potentials provide a quantitative measure of the tendency of a species to be reduced. A more positive standard reduction potential indicates a greater likelihood of reduction, and consequently, a lower likelihood of oxidation. By examining the standard reduction potentials of Sc and Co, one can determine which element is more easily oxidized.
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01:10Standard Reduction Potentials
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Which of the following transition metals have more than one oxidation state?
(a) Ti
(b) V
(c) Cr
(d) Zn
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Domanda del libro di testo
The highest oxidation state for the early transition metals Sc, Ti, V, Cr, and Mn is the periodic group number. The highest oxidation state for the later transition elements Fe, Co, and Ni is less than the periodic group number. Explain.
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The atomic radii of zirconium (160 pm) and hafnium (159 pm) are nearly identical. Explain.
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