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We continue our discussion of structure and bonding by introducing the valence-shell electron-pair repulsion (VSEPR) model (pronounced “vesper”), which can be used to predict the shapes of many molecules and polyatomic ions.
The VSEPR model is not a theory; it does not attempt to explain observations. Instead, it is a counting procedure that accurately predicts the three-dimensional structures of a large number of compounds, which cannot be predicted using the Lewis electron-pair approach.
The VSEPR theory describes five fundamental shapes of molecules. They are as follows: 1. Linear: It refers to the geometry shaped by a central atom surrounded by two other atoms. The atoms are arranged in a straight line, and the angle between the bonds is 180 °. The VSEPR notation.
10 Αυγ 2022 · The basic idea in molecular shapes is called valence shell electron pair repulsion (VSEPR). It basically says that electron pairs, being composed of negatively charged particles, repel each other to get as far away from each other as possible.
VSEPR Theory. The valence shell electron pair repulsion theory (VSEPR) predicts the shape and bond angles of molecules. Electrons are negatively charged and will repel other electrons when close to each other.
Valence shell electron pair repulsion or VSEPR theory can be used to predict molecular geometry. The theory is based on Lewis structures and the simple idea that that the preferred geometry around a central atom is the one that minimizes electron repulsion.
The valence shell electron pair repulsion theory (VSEPR) predicts the shape and bond angles of molecules. Electrons are negatively charged and will repel other electrons when close to each other.
