125. Explain the experimentally established structure of a molecule or ion using the valence bond method. Specify the type of orbital hybridization of the central atom, depict the overlap of the orbitals, and determine whether this particle is polar.
Attention! The general type of a molecule is written as ABmEn, where A is the central atom, B is the terminal atoms, and E is the unshared pair of electrons. The presence of an unshared pair of electrons in a molecule is designated as B*. In the case of a trigonal bipyramid (sp3d hybridization), the unshared pairs of electrons are located in the equatorial plane, while in an octahedron (sp3d2 hybridization), they are in axial positions.
Item No. Particle Geometric shape of particle Bond angles, deg
125 [ВеF4]2- Tetrahedron F-Ве-F 109.5

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