Domanda del libro di testo
(a) What are 'valence electrons'?
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Ch.6 - Electronic Structure of Atoms
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 6, Problema 73b
(b) What are 'core electrons'?
Guida verificata passo dopo passo1
Core electrons are the electrons in an atom that are not involved in chemical bonding.
They are located in the inner shells of an atom, closer to the nucleus, and are not part of the valence shell.
Core electrons are typically more tightly bound to the nucleus compared to valence electrons.
In electron configuration, core electrons are represented by the filled inner orbitals, while valence electrons are in the outermost orbitals.
Understanding core electrons is important for explaining properties like atomic size, ionization energy, and shielding effect.
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Core Electrons
Core electrons are the electrons in an atom that are not involved in chemical bonding and are located in the inner shells, closest to the nucleus. They are typically shielded from the effects of external electric fields and do not participate in reactions, unlike valence electrons, which are found in the outermost shell and are responsible for an atom's chemical properties.
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02:32
Main Group Elements Valence Electrons
Electron Configuration
Electron configuration describes the distribution of electrons in an atom's atomic orbitals. It is represented using a notation that indicates the energy levels and sublevels occupied by electrons. Understanding electron configuration is essential for identifying core and valence electrons, as it helps visualize which electrons are involved in bonding and which are core electrons.
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01:33Electron Configuration Example
Shielding Effect
The shielding effect refers to the phenomenon where inner electrons (core electrons) reduce the effective nuclear charge felt by outer electrons (valence electrons). This effect influences the chemical behavior of an atom, as it affects the attraction between the nucleus and the valence electrons, thereby impacting ionization energy and reactivity.
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02:31Photoelectric Effect
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What is the maximum number of electrons that can occupy each of the following subshells? a. 3p, b. 5d, c. 2s, d. 4f.
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For each element, indicate the number of valence electrons, core electrons, and unpaired electrons in the ground state: c. chlorine
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