Komperda

Ionic NomenclatureKomperda

Komperda

Rules for FormulasAll atoms must achieve stable electron

configuration (full valence)

The formula must be electrically neutralThe sum of the positive and negative charges

must equal zero

Komperda

Komperda

How do we name our formulas?

Name the cation first, then the anion

Do not include the numbers in the name

Example:

BaCl2 = Barium Chloride

Komperda

Transition MetalsForm more than one type of cation

Must use Roman Numerals to distinguish which cation is in the formula

Roman Numerals are ONLY used in the NAME, not in the formula

The Roman Numeral stands for the charge on the cation, NOT THE SUBSCRIPT in the formula

Komperda

Komperda

Formula vs. Name

FeN = Iron (III) Nitride

Cu2O = Copper (I) Oxide

SnO = Tin (II) Oxide

SnO2 = Tin (IV) Oxide

Komperda

How do I figure out what to name it?

Komperda

What do Ionic Compounds look like?

Ionic compounds form salts

Think of table salt

Cations are smaller than the parent atom

Anions are bigger than the parent atom

The compounds formed become tightly packed spheres of atoms

Komperda

Sizes of Ions

Komperda

KomperdaThe Positions of the Centers of the atoms form

a matrix

Komperda

ReviewSimple Binary Ionic Compounds use the simple

names of the ions

Transition Metals with more than one charge use Roman Numerals in the name, not in the formula

Names and formulas are cation first, then the name of the anion