Advanced Honors / Honors Chemistry: Homework Set 6-2
1. Differentiate between ionic and covalent bonding.
2. Define the term molecule. What type of bonding is present in molecules?
3. Determine if the following compounds contain ionic or covalent bonds.
a. CO2
d. HCl
b. KBr
e. Ca3N2
c. SiF4
4. Determine the number of valence electrons in each of the following molecules.
a. SF2
b. AsBr3
5. Draw Lewis structures for each of the following molecules.
a. GeCl4
d. HBrO
b. NH3
e. CCl3F
c. OF2
6. Draw Lewis structures for each of the following molecules or polyatomic ions.
a. HCN
d. COCl2
b. CS2
e. NH4+1
c. ONCl
f. SO3-2
7. Explain what is wrong with each Lewis structure, and then correct each one.
8. One of the following compounds has a carbon-nitrogen bond length of 116 pm; the other has a carbonnitrogen bond length of 147 pm. Match a bond length with each compound. Explain your reasoning. In
which molecule does the carbon-nitrogen bond have the greater bond energy?
9. How is a coordinate covalent bond different from other covalent bonds?
10. Distinguish between a polar covalent bond and a nonpolar covalent bond.
11. Which atom in a polar covalent bond has a partial negative charge?
12. Determine whether each of the following covalent bonds would be polar or nonpolar. For those that are
polar, identify which atom would have a partial positive charge and which atom would have a partial
negative charge.
a. H – H
b. C – O
c. Si – Cl
d.
e.
f.
H – Br
Br – Br
O–F
13. For each of the following, determine the type of bond (ionic, polar covalent, or nonpolar covalent) that
should form between each pair of atoms.
a. H and I
b. S and O
c. K and Br
d.
e.
f.
Se and S
Ca and N
C and H