This document discusses binary compounds and ionic bonding. It defines binary compounds as those containing only two elements and provides examples such as NaCl, CO2, NH3, and P4O10. It specifies that a binary ionic compound contains a metal and non-metal. Rules for naming ionic compounds are outlined, including noting the charge of the metal ion. Methods for determining the charge on the metal ion by balancing charges are also described.

3. Binary Compound
A compound in which
only 2 elements are
present
NaCl, CO2, NH3, and
P4O10
Binary Ionic Compound
An Ionic compound in
which one element
present is a metal and
the other element
present is non-metal
NaCl
Metal
Non-Metal

4. Which of the following binary compounds would
be expected to be an ionic compound?
Al2S3 CO2
Ionic Not Ionic
Al2S3 CO2
H2O MgCl2
KF PF3
NH3 Fe2O3
Ionic
Not Ionic
Ionic
Not Ionic
Not Ionic
Ionic
Ionic
Not Ionic

5.  Rule: The full name of the metallic
element is given first, followed by a
separate word containing the stem of
the metallic non-metallic element and
the metallic non-metallic element and
the suffix –ide.
Metal
Non-Metal
potassium chloride
Note:
“chlor” is the stem
of the non-metallic
element chlorine

7. Name the following binary ioniccompounds
MgO Al2S3
magnesium
oxide
aluminum
sulfide
MgO Al2S3
K3N BeO
CaCl2 Li3P
Na2S BaI2
oxide
potassium
nitride
calcium
chloride
sodium sulfide
sulfide
berellium oxide
barium iodide
lithium
phosphide

8. What is Variable Ionic Behavior?
Pertains to the less predictable behavior of some
metals because they have the ability to form
more than one type of ion.(Ex. Fe2+ and Fe3+)
Note:
all inner transition elements, most transition metals, and
a few representative metals exhibit variable ionic
charge behavior.

9.  Rule: “The charge of the metal ion must
be included in the name.”
Ex. FeCl2 and
FeCl3
iron (II) chloride
iron (III) chloride

10.  Old Method: “Latin name is used + the suffix
–ic and –ous.” “ic” is used for ion of higher
charge, and “ous” for ion of lower charge.
FeCl2
ferric chloride
ferrous chloride
FeCl3

11.  Calculating for the charge of Metal Ion
Ionic charge must
add to zero
Ex. FeCl2
iron charge + 2 (chlorine charge) = 0
Iron charge + 2(-) = 0
Iron charge = 2+

13. Name the following compounds, which contain
on or more polyatomic ions
on or more polyatomic ions
AuCl Fe2O3
PbO2 Cu2S
Gold (I)
chloride
Lead (IV) oxide
Iron (III) oxide
Copper (I)
sulfide