Chemistry

CHM 094 Practice #5 Name ____________________

1. Name the following compounds:

NH3

N2Br4

NO2

CO

CO2

NO

N2O

BrCl

CH4

2. Write the chemical formulas for the following compounds:

Dinitrogen pentoxide

Nitrogen trifluoride

Ammonia

Carbon monoxide

Sulfur trioxide

Sulfur dichloride

Silicon tetrachloride

Methane

Carbon tetrafluoride

Dihydrogen monoxide

Water

3. Draw valid Lewis structures, and determine the molecular geometries of the following molecules and ions using the VSEPR theory. For cations subtract one electron from the total of valence

electrons, for anions add one electron to the total of valence electrons. You will need an extra sheet

of paper to complete this assignment (please staple it to this one).

SiH4; PCl3; CO2; CCl4; H2O; NF3; O3; OF2; NH4 +; NH2ˉ; AlH4ˉ; H3O

+; BF4ˉ; BrF2 +; CI4.

Very important: in BF4ˉ B obeys the octet rule;

in BrF2 + Br is the central atom and it is allowed to have more than 1 bond.