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

In summary, the VSEPR model is a useful tool for visualizing the positions of nuclei and bonding connections in molecules. However, it should be noted that the model does not fully capture the quantum nature of electrons or the effects of excitations on bonding.
  • #1
rdr-s
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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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  • #2
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.
 

1. What is the VSPER model and how does it determine molecular shape?

The VSPER (Valence Shell Electron Pair Repulsion) model is a theory that explains the three-dimensional shape of molecules. It states that the shape of a molecule is determined by the repulsion between the valence electron pairs surrounding the central atom. The pairs of electrons, whether they are bonding or non-bonding, will try to minimize their repulsion by arranging themselves as far apart as possible.

2. Is the VSPER model accurate in predicting molecular shape?

Yes, the VSPER model is generally accurate in predicting molecular shape. However, there are instances where the model may not accurately predict the shape of a molecule due to the presence of lone pairs of electrons or certain molecular geometries that do not fit into the model's categories.

3. Can the VSPER model be used for all types of molecules?

No, the VSPER model is most accurate for molecules with a central atom surrounded by bonding and non-bonding electron pairs. It may not accurately predict the shape of molecules with multiple central atoms or with more complex bonding arrangements.

4. How does the VSPER model explain the difference between polar and nonpolar molecules?

The VSPER model can determine whether a molecule is polar or nonpolar based on its shape. If the molecule has a symmetrical shape, the bond dipoles will cancel out and the molecule will be nonpolar. However, if the molecule has an asymmetrical shape, the bond dipoles will not cancel out and the molecule will be polar.

5. Can the VSPER model be applied to ions as well?

Yes, the VSPER model can be applied to ions. The same principles of electron pair repulsion apply to determine the shape of an ion. However, the overall charge of the ion may affect the shape of the molecule due to the repulsion between the charged particles.

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