(Polar molecules, Non-polar molecules, etc.)
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I don't think so. The way I drew that specific molecule you gave was that I put a triple bond between C and N and the H on the left side of C. I don't think the lone pairs in N account for its shape in this particular example. However, someone correct me if I'm wrong.
Lone pairs do count as 1 area of electron density. So with VSEPR you have to consider them. But while just drawing the lewis structure you don't have the account for the affect of the lone pair on other bonds. You just draw it and place the lone pairs. But for electron geometry, lone pairs will push the bonds away, distorting the theoretical bond angle.
In the VSEPR theory that we use to name molecules, only the electrons associated with the central atom are considered. If you look at the VSEPR formula, which involved A-the central atom, X-number of bonds connected to the central atom, and E- number of lone pairs/a radical on the central atom. Thus, we are not considering lone pairs on other atoms when naming and describing shape using VSEPR.
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