Does a molecule really take on the shape like the VSPER model?

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SUMMARY

The VSEPR (Valence Shell Electron Pair Repulsion) model serves as a visualization tool for molecular geometry, illustrating the spatial arrangement of atoms based on electron pair repulsion. While the model suggests shapes such as trigonal bipyramidal, it is crucial to understand that atoms do not conform to these shapes rigidly; they are not spherical, and bonds are not merely stick-like. The VSEPR model cannot accurately depict the quantum behavior of electrons or the complexities of atomic bonding, including the effects of excitations.

PREREQUISITES
  • Understanding of VSEPR theory and its applications in molecular geometry
  • Basic knowledge of atomic structure and electron configuration
  • Familiarity with quantum mechanics principles related to atomic bonding
  • Concept of molecular shapes and their significance in chemistry
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  • Research the limitations of the VSEPR model in predicting molecular shapes
  • Explore quantum mechanics and its impact on atomic bonding and electron behavior
  • Learn about alternative models for molecular geometry, such as Molecular Orbital Theory
  • Investigate the role of electron excitations in chemical bonding
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Chemistry students, molecular modelers, and researchers interested in the visualization of molecular structures and the underlying principles of atomic interactions.

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Is the VSEPR model a tool to help us visualize what is happening to molecules, or do the atoms really take on the shape of something like a trigonal bipyramidal?
 
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The models express the positions of the nuclei of the component atoms and the bonding connections. Yest atoms do really take on the shape of something like the models but only "something like". Atoms are not spherical balls. Bonds are not sticks nor stick shaped.

So yes a "VSEPR model is a tool to help us visualize what is happening to molecules". They cannot represent the quantum nature of the electrons surrounding the nuclei nor how their behavior dictates the types and strengths of the bonding between atoms nor effects of excitations and such.
 

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