Naming Compounds

Three Rules

• "ide" -use "hydro______ic acid"

• "ate" -use "________ic acid"

• "ite" -use "________ous acid"

If the anion is a single atom, it will always end in -ide.

...however, there are some polyatomic ions that end in -ide

• "ide" -use "hydro______ic acid"

• "ate" -use "________ic acid"

• "ite" -use "________ous acid"

• "ide" -use "hydro______ic acid"

• "ate" -use "________ic acid"

• "ite" -use "________ous acid"

As simple as knowing a few prefixes

• 1- mono

• 2- di

• 3- tri

• 4- tetra

• 5- penta

• 6- hexa

• 7- hepta

• 8- octa

• 9- nona

• 10- deca

Pretty easy until you have a transition metal as the cation

• The cation is called its name. Ex: Na⁺¹ is "sodium"

• If the anion is a single atom, use its name, minus the ending, replaced with "ide"

• If the anion is a polyatomic ion, use the name on the polyatomic ion sheet

• Find out the total charge for the anion side

• Assume the cation side is the same magnitude (opposite charge)

• Divide by subscript of cation (if different than one)

• Whatever the charge is, put it as a Roman Numeral

• Whatever the Roman Numeral is, put it as the charge.

• Use the crossover method to get subscripts