Valence Shell Electron Pair Theory
1) Briefly describe the primary ideas behind VSEPR theory.
Electron don’t like each other because of their repelling behavior. Thus because of their molecular
tendencies to separate, they push themselves further from each other with bonds.
2) For each of the following compounds, draw a Lewis structure, determine the bond angles and
molecular shapes for all atoms:
a) BI3
Bond angle 120
Trigonal planar
b) CH4
Bond angle 109.5
tetrahedral
c) NF3
Bond angle 107.5
Trigonal pyramidal
d) C2H2
Bond angle 180
Linear line