VSEPR Theory - not homework related

In summary, VSEPR Theory, which stands for Valence Shell Electron Pair Repulsion Theory, is a model used to predict the shapes of molecules based on the repulsion of electron pairs in the valence shell of an atom. It states that the electron pairs will arrange themselves to minimize repulsion, resulting in specific molecular shapes. VSEPR Theory is important in understanding and predicting the properties and behavior of molecules, as well as explaining bonding and reactivity. However, it has limitations, such as not considering lone pairs of electrons and assuming equal repulsion for all electron pairs. VSEPR Theory is applied in various areas of chemistry, including organic and inorganic chemistry, determining polarity, and studying biological molecules.
  • #1
elemis
163
1
When there are 5 or more electrons pairs neglect repulsion between electron pairs at an angle greater than 900

This is an excerpt from http://www.s-cool.co.uk/alevel/chemistry/atomic-structure/shapes-of-molecules.html" SCROLL DOWN.

My question is quite simple : what does this mean ? What are they trying to say ?
 
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  • #2
Perhaps that system is dominated by repulsions of pairs with angles lower than 90°?
 

1. What is VSEPR Theory and what does it stand for?

VSEPR Theory stands for Valence Shell Electron Pair Repulsion Theory. It is a model used to predict the shapes of molecules based on the repulsion of electron pairs in the valence shell of an atom.

2. How does VSEPR Theory explain the shapes of molecules?

VSEPR Theory states that the electron pairs in the valence shell of an atom will arrange themselves in a way that minimizes repulsion, resulting in specific molecular shapes.

3. What is the importance of VSEPR Theory in chemistry?

VSEPR Theory helps us to understand and predict the shapes of molecules, which is important in determining the properties and behavior of these molecules. It also helps in explaining the bonding and reactivity of molecules.

4. Are there any limitations to VSEPR Theory?

Yes, VSEPR Theory does not take into account the presence of lone pairs of electrons, which can affect the shape of a molecule. It also assumes that all electron pairs have the same amount of repulsion, which may not always be the case.

5. How is VSEPR Theory applied in real-world situations?

VSEPR Theory is used in many areas of chemistry, such as in predicting the shapes of molecules in organic and inorganic chemistry, determining the polarity of molecules, and understanding the structures of biological molecules.

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