Name: __________________________________
Period: ____
Chemistry – 7.2 Textbook Problems
27 Points Possible
7.2 Review (p. 219)
1. Assign oxidation numbers to each atom in the following compounds or ions:
a. HF
H = +1
F = −1
b. CI4
C = +4
I = −1
c. H2O
H = +1
O = −2
d. PI3
P=
+3
I = −1
e. CS2
C=
+4
S = −2
f. Na2O2
Na = +1
O = −1
g. H2CO3
H=
+1
C = +4
h. NO2−
N=
+3
O = −2
i. SO42−
S=
+6
O = −2
j. ClO2−
Cl =
+3
O = −2
k. IO3−
I=
+5
O = −2
O = −2
2. Name each of the following binary molecular compounds according to the Stock system.
a. CI4
carbon (IV) iodide
b. SO3
sulfur (VI) oxide
c. As2S3
arsenic (III) sulfide
d. NCl3
nitrogen (III) chloride