NOMENCLATURE FOR INORGANIC COMPOUNDS
I. ASK FIRST: Is it IONIC, COVALENT or an ACID?
II. If IONIC:
A. Name the Cation
i. Monoatomic cations are named after the element they came from
ii. Roman Numeral designates the cation’s charge if it can be variable
iii. Polyatomic cations are simply named according to their given
B. Name the Anion
i. Monoatomic anions named after element, with the -IDE ending
ii. Polyatomic ions named after their given name
C. Name the degree of hydration, if any (water molecules included?)
i. Add the word “hydrate” at the end of the name, with a Greek
prefix on it to designate degree of hydration.
III. If COVALENT:
A. Name first element and add a Greek prefix if there are two or more of them.
B. Name the second element with an –IDE ending and add a Greek prefix if there
are two or more of them.
IV. If an ACID:
A. If H is the cation AND the compound is aqueous (aq), then use acid naming
B. ONLY name the ANION, change the ending to –IC or –OUS, and add the
C. Remember: “-ATE” becomes “-IC acid” and “ITE” becomes “OUS acid”