교과서 질문
(d) If you remove a single electron from a P atom, which orbital will it come from?
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Ch.7 - Periodic Properties of the Elements
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
7장, 문제 81b
(b) Repeat these calculations using Slater’s rules.
검증된 단계별 안내1
Identify the electron configuration of the element in question. Determine the number of electrons in each shell and subshell.
Apply Slater's rules to calculate the shielding constant (\( \sigma \)) for each electron. Remember that electrons in the same group, inner shells, and different shells contribute differently to the shielding.
Calculate the effective nuclear charge (\( Z_{\text{eff}} \)) using the formula: \( Z_{\text{eff}} = Z - \sigma \), where \( Z \) is the atomic number and \( \sigma \) is the total shielding constant.
Consider the contributions of different electron groups: Electrons in the same shell, electrons in the \( n-1 \) shell, and electrons in shells \( n-2 \) or lower, each with their respective shielding values.
Sum up the contributions from all electrons to find the total shielding constant, and use it to determine the effective nuclear charge.
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주요 개념
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Slater's Rules
Slater's Rules are a set of guidelines used to estimate the shielding effect of electrons in multi-electron atoms. They provide a systematic way to calculate the effective nuclear charge (Z_eff) experienced by an electron, taking into account the contributions of other electrons. By applying these rules, one can determine how much an electron is shielded from the full positive charge of the nucleus, which is crucial for understanding atomic structure and electron configurations.
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가이드 코스
06:35
Effective Nuclear Charge Calculation with Slater's Rules
Effective Nuclear Charge (Z_eff)
Effective Nuclear Charge (Z_eff) is the net positive charge experienced by an electron in a multi-electron atom. It is calculated by subtracting the shielding effect of other electrons from the actual nuclear charge. Z_eff influences various atomic properties, including ionization energy and atomic size, as it determines how strongly an electron is held by the nucleus. Understanding Z_eff is essential for predicting the behavior of atoms in chemical reactions.
추천 영상:
가이드 코스
01:51Effective Nuclear Charge
Shielding Effect
The shielding effect refers to the phenomenon where inner-shell electrons partially block the attractive force of the nucleus on outer-shell electrons. This results in outer electrons experiencing a reduced effective nuclear charge. The extent of shielding varies depending on the electron configuration and the arrangement of electrons in an atom. Recognizing the shielding effect is vital for accurately calculating Z_eff and understanding trends in the periodic table.
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가이드 코스
02:31Photoelectric Effect
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교과서 질문
(c) Detailed calculations indicate that the effective nuclear charge is 5.6+ for the 3s electrons and 4.9+ for the 3p electrons. Why are the values for the 3s and 3p electrons different?
교과서 질문
Figure 7.4 shows the radial probability distribution functions for the 2s orbitals and 2p orbitals. (a) Which orbital, 2s or 2p, has more electron density close to the nucleus?
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교과서 질문
(a) If the core electrons were totally effective at screening the valence electrons and the valence electrons provided no screening for each other, what would be the effective nuclear charge acting on the 3s and 3p valence electrons in P?
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교과서 질문
Figure 7.4 shows the radial probability distribution functions for the 2s orbitals and 2p orbitals. (b) How would you modify Slater's rules to adjust for the difference in electronic penetration of the nucleus for the 2s and 2p orbitals?
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