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Ionic Compound Nomenclature
Nomenclature – naming and formula writing of chemical compounds
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Ionic Nomenclature Ionic bonding occurs between…
a metal & a non-metal To name an ionic compound: name the metal name the non-metal, adding an –ide ending name the cation, name the anion
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Ionic Nomenclature For example… CaCl2 forms from:
the calcium ion, Ca2+ and the chloride ion, Cl- So, the name of CaCl2 is calcium chloride.
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Ionic Nomenclature MgO magnesium oxide Al2O3 Rb3P aluminum oxide
rubidium phosphide
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Ionic Nomenclature To write formulas for an ionic compound, determine what charge is on the metal ion and what charge is on the non-metal ion. Then, determine the formula, so that the compound is neutral (the ‘criss-cross’ method may be useful in determining the formula)
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Ionic Nomenclature For example… magnesium bromide is made up of magnesium ions (Mg2+), and bromide ions (Br-) Mg2+ Br- So, the formula is MgBr2
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Ionic Nomenclature sodium chloride barium fluoride potassium sulfide
magnesium phosphide calcium oxide (try some more…)
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Type II Ionic Nomenclature
What is the name of: FeS? Fe2S3? AuF? AuF3?
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Type II Cations Cu+ copper(I) cuprous Cu2+ copper(II) cupric Fe2+ iron(II) ferrous Fe3+ iron(III) ferric Sn2+ tin(II) stannous Sn4+ tin(IV) stannic Cr2+ chromium(II) chromous Cr3+ chromium(III) chromic Mn2+ manganese(II) manganous Mn3+ manganese(III) manganic Hg22+ mercury(I) mercurous Hg2+ mercury(II) mercuric Pb2+ lead(II) plumbous Pb4+ lead(IV) plumbic Co2+ cobalt(II) cobaltous Co3+ cobalt(III) cobaltic Au+ gold(I) aurous Au3+ gold(III) auric Ni2+ nickel(II) nickelous Ni3+ nickel(III) nickelic
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Type II Ionic Nomenclature
What is the formula of: copper(II) bromide? plumbous chloride? lead(IV) oxide? chromium(III) sulfide? manganic selenide?
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Type II Ionic Nomenclature
What is the name of: FeS Fe2S3 AuF AuF3 Pb2S3
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