Intro to NomenclatureBinary Compounds

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Title: Intro to NomenclatureBinary Compounds

1
Intro to Nomenclature/Binary Compounds
2
Binary Compounds

3
Binary Ionic Compounds

4
Binary Ionic Compounds cont

Two types of Binary Ionic compounds
Type I When the metal in the compound only can
form 1 cation
Type II When the metal in the compound can form
two or more cations (mostly transition metals)

5
Binary Ionic Compounds Type I

Rule 1. The cation is written first in the name
the anion is written second in the name.
Rule 2. The name of the cation is the same as the
(neutral) element from which it is derived (e.g.,
Na "sodium").
Rule 3. The anion is named by adding the suffix
-ide to the root of the element name (e.g., I-
"iodide").

6
Binary Ionic Compounds Type I cont

7
Binary Ionic Compounds Type II
8
Binary Ionic Compounds Type II

1) Use the name of the cation then the anion
2) After the name of the cation use roman
numerals to represent the charge on the cation
3) The anion is named by adding the suffix -ide
to the root of the element name

9
Binary Ionic Compounds Type II

10
Binary compounds type III

Type III binary compounds have only non-metals
They are not ionic!!! (they are another type of
bond which we will discuss in great detail
later!!!)

11
Binary compounds type III cont

When we name type III binary compounds
The first element name is first, and the full
element name is used
The second element is name as though it were an
anion
Pre-fixes are used to tell how many of each atom
is in each molecule
one mono Six hexa
two di seven hepta
Three tri eight octa
four tetra Nine nona
five penta ten deca
4) The prefix mono- is never used for the first
element- even if there is only 1 atom present.

12
Binary compounds type III cont