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A region around a central atom where electron pairs are localized is called an electron.

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Final answer:

Electron-pair and electron group geometries are essential in determining molecular shapes and properties in chemistry.


Explanation:

Electron-pair geometry refers to the spatial arrangement of electron pairs around a central atom in a molecule. It includes both bond pairs and lone pairs. This concept is crucial in understanding molecular shapes and predicting chemical properties.

In VSEPR theory, the electron group geometry or steric number (SN) determines the arrangement of regions of electron density around the central atom.

For example, in a molecule with three regions of electron density and sp² hybridization, the electron-pair geometry is trigonal planar, leading to a specific molecular shape.


Learn more about Molecular Geometry here:

https://brainly.com/question/39054150


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