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Chapter 4

Chapter 4. Nomenclature. 4.1 Naming M etal + 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

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Chapter 4

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  1. Chapter 4 Nomenclature

  2. 4.1 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 cationsthat have different charges…We use a roman numeral after the cation name to indicate the charge.

  3. 4.1 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 –ide to it

  4. 4.2 Naming nonmetal Compounds • First use the full name of the first element • Use the second element like it is an anion • Use a prefix located in chart 4.3 • The –mono prefix is only ever used on the second element

  5. 4.4 Naming Compounds with Polyatomic Ions • First use the name of the cation • Then add the name of the anion

  6. 4.5 Naming Acids • All acids contain hydrogen in them • When hydrogen combines with a –ate polyatomic ion, it forms –ic • When hydrogen combines with a –ite polyatomic ion, it forms a -ous

  7. 4.6 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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