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Let's take a look at the molecular geometry and bond angles for AsF5. We'll start by looking
at the Lewis structure for AsF5. We have an Arsenic atom surrounded by 5 Fluorine atoms.
We use the AXN notation to determine the molecular geometry. A, that's the central atom, in this
case Arsenic; X, that's the number of atoms bonded to that central atom. We have 5, five
Fluorines, and N, that's the nonbonding electron pairs. Here we don't have any nonbonding electron
pairs on the central atom, so we won't worry about N. Looking at our table here, we go
down and find AX5, that means that our molecule here, AsF5, is going to have a trigonal bipyramidal
shape. The bond angles will be 120 and 90. For the trigonal bipyramidal molecular geometry,
this angle right here is going to be 90 degrees, and that's the same as this angle right here.
So those are both 90 degrees. Along this angle right here, we have 120 degrees. That's the
same angle as this one here, and then right here. So that's the molecular geometry for
AsF5, and the bond angles. I'm Dr. B., and thanks for watching.