Chemical Bonding and
Lewis Structure Class Work
For all compound formulas given draw the Lewis Structure, identify the VSEPR
shape, and indicate the bond angle:
CH3I
ONF
SeH4
CO3-2
PF5
SiCl4
NO3-1
ClF2
OF2
PCl3
CNS-1
SF6
1) What is polarity? (Provide an example)
2) Identify the polarity of:
Br – O
3) Determine the type of bond
Li – O
4) Which of the two bonds are more polar?
S – P or
B–N
5) Describe electronegativity as best you can in terms of the atom itself.
6) Identify the type of bond:
a. N – O
b. K – I
7) Which of the bonds in question 6 is more polar?
8) Draw the symbol that indicates polarity and explain its meaning.
For questions 1-5 draw the polarity, Identify the type of each bond, and circle the
more polar of the two polar covalent molecules:
1. .
C-O
and
As-O
2. .
H-F
and
H-Cl
3. .
B-O
and
C-S
4. .
Pb-O
and
Al-O
5. .
Si-Br
and
P-Br