VSEPR!
Molecule (atom)
CH4
NI3
PCl5
H2 S
XeCl2
C2H2 (C)
SO2 (S)
CO2
BCl3 (B)
SO4-2
Name: _____________________________
#VE
VSEPR Notation
AB4
Molecular Geometry
tetrahedral
Bond Angles
109.5°
Draw Lewis structures for all of the above molecules. Circle the atom whose geometry is being analyzed.
Draw the Lewis structures and state the bond angles of CH4, NH3, and H2O. Why are they slightly different?
List the two atoms that covalently bond to form incomplete octets and state how many electrons each atom will
hold around its nucleus. Give examples of these two atoms covalently bonding with two Lewis structures.
Molecule (atom) #VE
VSEPR Notation
PF4
PF6-1
I-1
XeF4
CH2O (C)
CH3OH (O)
BeF2
SiF4
C2H4 (C)
CO (C)
AB4
+1
32
Molecular Geometry
tetrahedral
Bond Angles
109.5°
Draw Lewis Structures for the above molecules. Circle the atom whose geometry is being analyzed. Remember expanded
octets have the lone pairs on the central atom.
What is the the main idea in VSEPR theory that determines the angles of the bonds around the central atom?