교과서 질문
In which of the following molecules can you confidently predict the bond angles about the central atom, and for which would you be a bit uncertain? Explain in each case. (a) H2S, (b) BCl3, (c) CH3I, (d) CBr4, (e) TeBr4.
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Ch.9 - Molecular Geometry and Bonding Theories
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
9장, 문제 21a,c,d
How many nonbonding electron pairs are there in each of the following molecules: (a) (CH3)2S (c) BF3 (d) SO2
검증된 단계별 안내1
Identify the central atom in the molecule, which is sulfur (S) in this case.
Determine the total number of valence electrons for the central atom. Sulfur has 6 valence electrons.
Count the number of bonds formed by the central atom. In (CH_3)_2S, sulfur forms two single bonds with two CH_3 groups.
Calculate the number of electrons used in bonding. Each single bond uses 2 electrons, so 2 bonds use 4 electrons.
Subtract the number of bonding electrons from the total valence electrons to find the number of nonbonding electrons. Divide this number by 2 to find the number of nonbonding pairs.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
3m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Valence Shell Electron Pair Repulsion (VSEPR) Theory
VSEPR theory is a model used to predict the geometry of individual molecules based on the repulsion between electron pairs in the valence shell of the central atom. According to this theory, electron pairs, whether bonding or nonbonding, will arrange themselves to minimize repulsion, which helps in determining the molecular shape and the presence of lone pairs.
추천 영상:
가이드 코스
00:47
Valence Shell Electron Pair Repulsion Theory
Lone Pairs
Lone pairs are pairs of valence electrons that are not involved in bonding and are localized on a single atom. In molecular structures, these nonbonding electron pairs can influence the shape of the molecule and its reactivity, as they occupy space and can repel bonding pairs of electrons.
추천 영상:
가이드 코스
01:33Lone Pair Positions
Molecular Structure of (CH3)2S
The molecular structure of dimethyl sulfide, (CH3)2S, consists of a sulfur atom bonded to two methyl groups (CH3). The sulfur atom has two lone pairs of electrons, which are crucial for determining the overall shape of the molecule and its polarity. Understanding the arrangement of these atoms and electron pairs is essential for identifying the number of nonbonding electron pairs.
추천 영상:
가이드 코스
02:08Molecular Formula
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Would you expect the nonbonding electron-pair domain in NCl3 to be greater or smaller in size than the corresponding one in PCl3?
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교과서 질문
How many electron domains are surrounding the central
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교과서 질문
How many nonbonding electron pairs are there in each of the following molecules: (b) HCN
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교과서 질문
How many nonbonding electron pairs are there in each of the following molecules: (b) HCN
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