Domanda del libro di testo
Each of the following elements is capable of forming an ion in chemical reactions. By referring to the periodic table, predict the charge of the most stable ion of each: c. K
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Ch.2 - Atoms, Molecules, and Ions
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 58e
Using the periodic table, predict the charge of the most stable ion of the following elements: e. Se
Guida verificata passo dopo passo1
Identify the group number of the element Selenium (Se) on the periodic table. Selenium is located in Group 16.
Recall that elements in Group 16 typically form ions with a charge of -2. This is because they tend to gain two electrons to achieve a full outer shell, similar to the nearest noble gas configuration.
Understand that the most stable ion of an element is often the one that achieves a noble gas electron configuration. For Selenium, gaining two electrons will result in the electron configuration of Krypton, a noble gas.
Conclude that the most stable ion of Selenium (Se) is Se²⁻, as it achieves a stable electron configuration by gaining two electrons.
Verify your prediction by considering the general trend: elements in Group 16, such as Oxygen and Sulfur, also form ions with a -2 charge, supporting the prediction for Selenium.
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Periodic Table and Group Trends
The periodic table organizes elements based on their atomic number and electron configuration, revealing trends in properties such as electronegativity and ionization energy. Elements in the same group (column) typically exhibit similar chemical behavior, including the charge of their most stable ions. For example, elements in Group 16, like selenium (Se), tend to gain electrons to achieve a stable octet, leading to a common charge of -2.
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Percorso guidato
05:33
Periodic Table: Group Names
Ion Formation and Stability
Ions are formed when atoms gain or lose electrons to achieve a more stable electronic configuration, often resembling that of the nearest noble gas. The stability of an ion is influenced by its charge and the energy required to form it. For selenium, gaining two electrons to form a Se²⁻ ion is energetically favorable, as it completes its valence shell, making it the most stable ion.
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06:17Ion Formation
Electronegativity and Electron Affinity
Electronegativity is a measure of an atom's ability to attract and hold onto electrons, while electron affinity refers to the energy change when an electron is added to a neutral atom. Elements with high electronegativity, like selenium, have a strong tendency to gain electrons, which contributes to the formation of negatively charged ions. This property is crucial for predicting the charge of ions formed by elements in chemical reactions.
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01:34Electron Affinity
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