(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

What is the geometry of AsH_{3}according to the VSEPR model?

3. The attempt at a solution

As has 5 valence electrons and H has one. The molecule therefore has four sets of electron pairs, whereof one is unshared. This gives a tetrahedral structure where the As-H angles are 107 degrees.

However, according to the solutions manual the geometry is triangular planar. Why?

I also have a problem with the geometry of OF_{2}. Here, there are four sets of electron pairs, whereof two are unshared. I would expect the geometry of this molecule to be bent, but it's linear according to my book.

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# Homework Help: VSEPR model

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