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16 Δεκ 2021 · The Valence-Shell Electron-Pair Repulsion (VSEPR) theory helps us to understand and predict the geometry (shape) of molecules or ions. The theory is: Electron pairs repel each other whether they are in chemical bonds or lone pairs.
- 11.1: VSEPR Theory
Valence shell electron-pair repulsion theory (VSEPR theory)...
- 11.1: VSEPR Theory
The premise of VSEPR is that the valence electron pairs surrounding an atom tend to repel each other. The greater the repulsion, the higher in energy (less stable) the molecule is. Therefore, the VSEPR-predicted molecular geometry of a molecule is the one that has as little of this repulsion as possible.
2 Απρ 2019 · – On this basis, R.G. Gillespie (1970) proposed a theory called the Valence-Shell Electron Pair Repulsion or VSEPR (pronounced as ‘Vesper’) theory. – VSEPR Theory states that: The electron pairs (both lone pairs and shared pairs, surrounding the central atom will be arranged in space as far apart as possible to minimise the ...
12 Μαΐ 2023 · Postulates of VSEPR Theory. This can be explained by the following postulates of the VSEPR theory: The valence pairs of electrons in the atoms connected to the center atom of a covalent molecule or ion have the least amount of repulsion, resulting in optimum stability and the least amount of energy.
The valence shell electron pair repulsion theory or VSEPR theory is used to predict the three-dimensional shape of a molecule. According to this theory, the molecular shape depends on the repulsion between the valence shell electron pairs of the central atom.
The VSEPR theory assumes that each atom in a molecule will achieve a geometry that minimizes the repulsion between electrons in the valence shell of that atom. The five compounds shown in the figure below can be used to demonstrate how the VSEPR theory can be applied to simple molecules.
Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular structure, including approximate bond angles around a central atom, of a molecule from an examination of the number of bonds and lone electron pairs in its Lewis structure.
