Name ________________
CHEM 1004
Homework #3
Fall 2010
Buckley
This homework is due on Tuesday, September 14 at class time.
1.
2.
(4 points) Let X be a generic atomic symbol for an element. Write the Lewis symbol in each situation
below using X as the atomic symbol. For example, if the Lewis symbol is to be for Group 1 elements,
write X•.
a.
Write the Lewis symbol for the alkaline earth metals.
b.
Write the Lewis symbol for Group 14 elements.
c.
Write the Lewis symbol for the halogens.
d.
Write the Lewis symbol for an ion of Group 2.
(10 points) Write the formula for and name the ionic compound formed between the following species.
Species
3.
Formula
Name
a.
Ba and Br
__________________
_______________________
b.
Rb and O
__________________
_______________________
c.
Mg and N
__________________
_______________________
d.
Fe2+ and Br
__________________
_______________________
e.
Cu2+ and S
__________________
_______________________
(5 points) Name each of the following covalent compounds.
a.
Compound
N2O5
Name
___________________________
b.
PCl5
___________________________
c.
N2O
___________________________
d.
SO3
___________________________
e.
IF3
___________________________