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Understanding Nomenclature: Naming Metal and Non-Metal Compounds

This chapter delves into the nomenclature of binary ionic compounds, explaining their formation from cations (positively charged ions) and anions (negatively charged ions). It covers how certain metals form different types of cations and the use of Roman numerals to indicate charge. The chapter also outlines the conventions for naming compounds with polyatomic ions and the importance of knowing element names and polyatomic ions for writing chemical formulas. A clear framework for naming and formula writing is essential for chemistry learners.

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Understanding Nomenclature: Naming Metal and Non-Metal Compounds

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  1. Chapter 5 Nomenclature

  2. Naming Metal + Non Metal Compounds • Forms a binary ionic compound • Made up of a cation(+ charge) and an anion(-charge) • Two types of compound • Some metals form only one type of cation • Other metals can form two or more cations that have different charges…We use a roman numeral after the cation name to indicate the charge.

  3. continued • Always name the cation first and the anion last • Then take the name of the cation • Then take the first part of the anion name and add –ideto it

  4. Naming Compounds with Polyatomic Ions • First use the name of the cation • Then add the name of the anion

  5. Writing Formulas From Names • Some metals have two charges • When a metal has more than one charge, you need to represent that charge in the name • Use a roman numeral( ex II) next to the metal to show the charge • You need to know the name of elements and Polyatomic ions

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