Name ____________________
CHEM 1004
Homework #7
Spring 2011
Buckley
This homework is due on Thursday, February 24, at class time. The assignment will be accepted
up until the start of class on Monday, February 18, with a 20% penalty. Assignments turned in
after class that day will receive no credit, though I will look through them if you want me to.
1. (10 points) Write formulas for and name compounds formed between each of the following
elements. In cases where multiple charges are possible I have indicated the charge to use.
Formula
Name
a. Sr and As
____________________
____________________
b. Cu2+ and O
____________________
____________________
c. Al and F
____________________
____________________
d. Ag and S
____________________
____________________
e. Fe3+ and Se
____________________
____________________
2. (5 points) Name each of the following compounds.
a. SO3 _________________________
b. N2O5 ________________________
c. CO
________________________
d. PF5
________________________
e. CCl4 ________________________
3. (2 points) You probably noticed the difference in how you named the compounds in
Question 1 compared to Question 2. What is the key difference between the two types of
compounds that causes this change in nomenclature?
←←←←←PLEASE TURN THE PAGE OVER→→→→→
4. (5 points) Write formulas for and name compounds formed between each of the following
elements. In cases where multiple charges on metals are possible I have indicated the charge
to use. For polyatomic ions I have included the charges though you will be expected to know
those for our five selected polyatomic ions.
Formula
Name
a. NH4+ and P
_______________________
_____________________
b. Ba and SO42-
_______________________
_____________________
c. Pb4+ and OH-
_______________________
_____________________
d. Sr and PO43-
_______________________
_____________________
e. Na and NO3-
_______________________
_____________________
5. (5 points) Using the criteria discussed in class (and presented in Section 4.7) and Figure 4.5,
predict whether each of the following bonds would be considered to be nonpolar, polar
covalent, or ionic in nature.
a. Mg—P
______________________________
b. Li—Br
______________________________
c. C—Cl
______________________________
d. O—O
______________________________
e. S—Br
______________________________