Exercise I on The VSEPR Model: Solutions
Question: Draw a correct Lewis Structure for SF4 and decide on its electron domain
and molecular geometries then estimate the F−S−F bond angle.
Based on the rules previouly mentioned, the the correct Lewis Structure of SF4 is:
The central atom (S) has 5 electron domains; the electron-domain geometry is:
Since there is a non-bonding pair of electrons, the molecular geometry is:
In this geometry, there are two angles; 120° and 180°
However, because of the non-bonding pair, these angles are a little bit different.
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Date of last modification: Summer , 2019