5.5 – VSEPR Theory
VSEPR Theory – states that repulsion between the sets of valence electrons surrounding an atom causes
these sets to be oriented as far apart as possible.
*stands for “valence shell, electron pair repulsion”
*this can also be referred to as molecular geometry
There are 3 possible geometric shapes that we will talk about:
1. Linear – AB2 (bond angle is 180o)
Ex) BeF2
2. Trigonal Planar – AB3 (bond angle is 120o)
Ex) BF3
3. Tetrahedrom – AB4 (bond angle is 109.5o)
Ex) CH4
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