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Ch.9 - Molecular Geometry and Bonding Theories
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.9 - Molecular Geometry and Bonding Theories문제 96a
9장, 문제 96a

a) Predict the electron-domain geometry around the central S atom in SF2, SF4, and SF6.

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1
Identify the number of electron domains around the sulfur (S) atom in each molecule. Electron domains include both bonding pairs of electrons and lone pairs of electrons.
For SF2: Count the number of bonding pairs and lone pairs on the sulfur atom. Sulfur forms two bonds with fluorine and has lone pairs that also contribute to the electron domain count.
For SF4: Determine the total number of electron domains by counting the sulfur-fluorine bonds and any lone pairs on the sulfur atom.
For SF6: Calculate the total electron domains by counting all the sulfur-fluorine bonds, considering that sulfur in SF6 typically uses all its valence electrons for bonding without lone pairs.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the electron-domain geometry for each molecule based on the number of electron domains calculated in the previous steps.

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주요 개념

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Electron-Domain Geometry

Electron-domain geometry refers to the spatial arrangement of electron domains around a central atom in a molecule. Electron domains can be lone pairs, single bonds, double bonds, or triple bonds. The geometry is determined by the number of these domains, which influences the overall shape of the molecule according to VSEPR (Valence Shell Electron Pair Repulsion) theory.
추천 영상:
가이드 코스
04:44
Electron Geometry

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 will arrange themselves as far apart as possible to minimize repulsion, leading to specific molecular shapes such as linear, trigonal planar, tetrahedral, and octahedral.
추천 영상:
가이드 코스
02:13
Molecular Shapes and VSEPR

Molecular Geometry of SF2, SF4, and SF6

The molecular geometry of SF2, SF4, and SF6 can be predicted by applying VSEPR theory to the sulfur atom's electron domains. SF2 has two bonding pairs and two lone pairs, resulting in a bent shape. SF4 has four bonding pairs and one lone pair, leading to a seesaw shape. SF6, with six bonding pairs and no lone pairs, adopts an octahedral geometry.
추천 영상:
가이드 코스
01:33
Molecular Geometry with Two Electron Groups
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