Binary Ionic Compounds (Only Has 2 Different Elements in the Compound)

NOMENCLATURE of IONIC COMPOUNDS

Ions

To Name Ions:

Cations:

Potassium=

Anions:

Chlorine=

Binary Ionic Compounds (only has 2 different elements in the compound)

To name binary ionic compounds:

Examples:

· NaCl ® sodium chloride

· MgO ® ______

· MgCl2®______

· HBr® ______

· Ca3P2® ______

Transition Metals

Transition metals can give up different numbers of electrons; therefore they can have multiple charges (This applies to lead and tin, too.)

Example: Titanium: Ti3+® loses 3 e-

Ti4+ ® ______

Roman Numeral: tells the charge of the ion preceding it. When an ion can have more than one charge(called multi-valent), you need to use a roman numeral to specify the charge.

Example: Lead Pb2+® Lead (II) ion

Pb4+ ® ______

Exceptions: if the transition metal only has one charge, then DO NOT use a roman numeral

Example: zinc ® Zn2+® zinc ion

What is another example of a transition metal with only one charge? ______

Reminder: roman numerals tell the charge of an ion

Example: Gold (III) chloride

What is the charge of the gold ion in gold (III) chloride? ______

Example: Tin (II) Bromide

What is the charge of the tin ion in Tin (II) Bromide? ______

Writing Formulas- (given the name, write the formula)

· The positive and negative charges must equal ZERO in the compound.

· Examples:

o Zinc sulfide

Zn2+ S2- ® ZnS

o sodium oxide

o Scandium bromide

Naming and Writing formulas for ionic compounds with polyatomic ions (tertiary ionic compounds):

· Name of cation first

· Name of anion second

· Remember roman numerals, if necessary

· Enclose polyatomic ions in parenthesis when requires a subscript

Examples:

· Zinc sulfate Copper (I) Chlorate

Zn2+ SO42- ® ZnSO4

· Calcium Phosphate Chromium(III) hydroxide

· Manganese(IV)Nitrite NaNO3

· MgCl2 Al(OH)3

· CuSO4 Cu3PO4