Question

what is vsepr theory​

Answer 1

Answer:

Explanation:

Valence shell electron pair repulsion (VSEPR) theory is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.[1] It is also named the Gillespie-Nyholm theory after its two main developers, Ronald Gillespie and Ronald Nyholm. The acronym "VSEPR" is pronounced either "ves-pur"[2]:410 or "vuh-seh-per".

Answer 2

The Valence Shell Electron Pair Repulsion Model is often abbreviated as VSEPR (pronounced “vesper”). It is basically a model to predict the geometry of molecules. Specifically, VSEPR models look at the bonding and molecular geometry of organic molecules and polyatomic ions. It is useful for nearly all compounds that have a central atom that is not a metal.

Importance of VSEPR Models

Lewis structures only tell the number and types of bonds between atoms, as they are limited to two dimensions. The VSEPR model predicts the 3-D shape of molecules and ions but is ineffective in providing any specific information regarding the bond length or the bond itself.

VSEPR models are based on the concept that electrons around a central atom will configure themselves to minimize repulsion, and that dictates the geometry of the molecule.

It can predict the shape of nearly all compounds that have a central atom, as long as the central atom is not a metal. Each shape has a name and an idealized bond angle associated with it.

The following terms are commonly used in discussing the shapes of molecules.

Bond Angle: This is the angle between a bonded atom, the central atom, and another bonded atom.

Lone Pair: This refers to a pair of valence electrons that are not shared with another atom.

Molecular Geometry: This is the 3-D arrangement of bonded atoms in a polyatomic ion or molecule.

Electron Pair Geometry: This is the 3-D arrangement of electron pairs around the central atom of a polyatomic ion or molecule.

The main difference between molecular geometry and electron pair geometry is that molecular geometry does not include unpaired electrons, whereas electron pair geometry includes both bonded atoms and unpaired electrons. If there are no unpaired electrons in the compound being assessed, the molecular and electron pair geometries will be the same.