Polyatomic Ions Many ions are monoatomic BUT Most ions are polyatomic (>1 atom) 330.07.01b.Names & Formulas - Polyatomic

There are five common polyatomic ions: nitrate NO3– carbonate CO32– (carbonated water) chlorate ClO3– sulfate SO42– phosphate PO43– (cola)

There are five common polyatomic ions: note: they all contain oxygen they all end in –ATE (signifies the most common form) there’s no simple correlation between the number of oxygens and the charge (easiest is to memorize)

Mnemonic (if they work for you; if not, memorize) Nick the Camel ate a Clam for Supper in Phoenix What are the patterns? What does the first letter in the name represent? The number of constants relates to what? The number of vowels relate to what?

Nick the Camel ate a Clam for Supper in Phoenix Nick nitrate Camel carbonate ate (all end in ate) Clam chlorate Supper sulfate Phoenix phosphate

nitrate NO3– Nick the Camel ate a Clam for Supper in Phoenix Consonants = number of oxygens Vowels = charge nitrate NO3–

Five Common polyatomic ions: nitrate NO3– carbonate CO32– chlorate ClO3– sulfate SO42– phosphate PO43–

Ion Formula Charge # O’s chlorate ClO3– perchlorate ClO4– chlorite Derivatives of the Five Common Polyatomic Ions Ion Formula Charge # O’s chlorate ClO3– perchlorate ClO4– chlorite ClO2– hypochlorite ClO– What’s the similarities & differences between names & charges?

Polyatomic Ions for Which You Are Responsible