Lewis Dot Diagrams and Lewis Structures
A.
Draw the formation of Compounds in three steps. First show each atom with its own outer-shell
electrons. Secondly, draw an electron dot diagram. In the last step draw a Lewis structure. The
first three questions are done as examples. Ionic Compounds only require two steps.
1.
CO2
Carbon Dioxide
2.
MgCO3
Magnesium Carbonate
3.
MgCl2
Magnesium Chloride
4.
SO3
Sulfur trioxide
5.
C2H4
Ethene
6.
Na2O
Sodium Oxide
7.
CH3OH
Methanol
8.
K2SO4
Potassium Sulfate
9.
P2H4
Diphosphorus tetrahydride
B.
State if the following pairs are likely to form ionic, covalent or polar covalent bonds. If the bond is
polar covalent use symbols δ+ and δ- to indicate whether the atom carries a slight positive or
negative charge.
1.
H -- Cl
2.
Br - Br
3.
C-O
4.
Mg - Cl
5.
P-H