Xe-F-Xe Bond Angle - Is it 104.5?

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In summary, the Xe-F-Xe bond angle is the angle formed between the Xe-F bonds in a molecule of XeF2, and it is important because it affects the overall shape and properties of the molecule. The expected value for this bond angle is 104.5 degrees, but it can vary slightly depending on the molecular environment and other factors. These factors include the presence of other atoms or molecules nearby, the electronic and steric effects of substituents, and the presence of lone pairs on the central Xe atom.
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Tanya Back
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What is the bond angle for Xe- F- Xe ?..is it 104.5?

Tanya
 
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Fluorine has 7 outer electrons, 2 of which are spent in bonding (sigma) to the 2 xenon atoms. That makes the number of electrons equal to 5 (2 pairs, 1 unpaired). So if FXe2 were to exist (and I am not saying it doesn't exist for I don't know myself) then it would have a funny geometry...2 sigma bonds, 2 lone pairs and 1 unpaired electron (counting basically).
 
  • #3
: The bond angle for Xe-F-Xe is not exactly 104.5 degrees, but it is close. The actual bond angle is around 109.5 degrees, which is the ideal tetrahedral bond angle for molecules with four electron domains. The Xe-F-Xe bond angle is slightly smaller due to the lone pair of electrons on the central xenon atom, which creates a repulsive force and causes the bond angle to decrease. However, 104.5 degrees is a reasonable approximation for this bond angle.
 

What is the Xe-F-Xe bond angle?

The Xe-F-Xe bond angle is the angle formed between the Xe-F bonds in a molecule of XeF2. It is also known as the Xe-F-Xe bond angle or the Xe-F-Xe angle.

Why is the Xe-F-Xe bond angle important?

The Xe-F-Xe bond angle is important because it affects the overall shape and properties of the molecule. It also gives us information about the bonding and electron arrangement in the molecule.

What is the expected value for the Xe-F-Xe bond angle?

The expected value for the Xe-F-Xe bond angle is 104.5 degrees. This is based on the VSEPR theory, which predicts that the Xe atom and the two F atoms will arrange themselves in a trigonal planar geometry.

Is the Xe-F-Xe bond angle always 104.5 degrees?

No, the Xe-F-Xe bond angle can vary slightly depending on the molecular environment and other factors. However, it is expected to be close to 104.5 degrees in most cases.

What factors can affect the Xe-F-Xe bond angle?

The Xe-F-Xe bond angle can be affected by factors such as the presence of other atoms or molecules nearby, the electronic and steric effects of substituents, and the presence of lone pairs on the central Xe atom.

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