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Old nomenclature for Type 2

Old nomenclature for Type 2. Transition metals were once named without using Roman numerals. Instead used suffixes to represent charges. Not specific enough!! Old professors in college still like to use and still see in many chemistry books, etc. Root word , then – ic or – ous suffixes.

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Old nomenclature for Type 2

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  1. Old nomenclature for Type 2 • Transition metals were once named without using Roman numerals. • Instead used suffixes to represent charges. Not specific enough!! • Old professors in college still like to use and still see in many chemistry books, etc. • Root word, then –ic or –ous suffixes. –icused for larger charge; –ousused for smaller charge.

  2. Fe3+ Iron (III) Fe2+ Iron (II) Cu2+ Copper (II) Cu+ Copper (I) Sn4+ Tin (IV) Sn2+ Tin (II) Hg2+ Mercury (II) Hg2+ Mercury (I) Pb4+ Lead (IV) Pb2+ Lead (II) Ferric Ferrous Cupric Cuprous Stannic Stannous Mercuric Mercurous Plumbic Plumbous

  3. Co3+ Cobalt (III) Cobaltic • Co2+ Cobalt (II) Cobaltous • Cr3+ Chromium (III) Chromic • Cr2+ Chromium (II) Chromous • Mn3+ Manganese (III) Manganic • Mn2+ Manganese (II) Manganous • Au3+ Gold (III) Auric • Au2+ Gold (II) Aurous

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