Chapter 4 NomenclatureSection 4.1 Naming Binary CompoundsA. Naming Compounds That Contain a Metal and a Nonmetal • __________ ionic compounds contain positive ___________ and negative ___________. – Type I compounds • Metal present forms only one _________ – Type II compounds • Metal present can form 2 or more _________ with different charges Type I Type IIType I Binary Ionic compoundsRules for Naming Type I Ionic Compounds1. The cation is always named _________ and the anion ___________.2. A simple __________ (obtained from a single atom) takes its name from the names of the ___________. For example, Na+ is called ___________ in the names of compounds containing this ion.3. A simple ________ (obtained from a single atom) is named by taking the _______ _____ of the element name (the ______) and adding ____. Thus the Cl- ion is called ____________.4. Write the name for the compound by ________________ the names of the ions.For compounds containing both a _________ and a ____________, the metal is always named first. Thenonmetal is named from the _______ element name.Type II Binary Ionic compounds • Since the __________ ion can have more than one charge, a ___________ _______________ is used to specify the charge.B. Naming Binary Compounds That Contain Only Nonmetals Type III CompoundsRules for Naming Type III Binary Compounds1. The first element in the formula is named ________, and the _____ element name is used.2. The _________ element is named as though it were an _________.3. Prefixes are used to denote the ______________ of atoms present.4. The prefix mono- is _________ used for naming the _________ element. For example, CO is called ____________ _________________, not _________________ _______________.
Prefixes Used to Indicate Numbers in Chemical NamesPrefix Number Prefix Numbermono- 1 hexa- 6 2 7 3 8 4 nona- 9 5 deca- 10 Naming Binary Compounds Summary
Section 4.2 Naming and Writing Formulas for More Complex CompoundsA. Naming Compounds That Contain Polyatomic Ions • Polyatomic ions are charged entities composed of several atoms bound together. • They have special names and must be memorized. • Naming ionic compounds containing polyatomic ions follows rules similar to those for binary compounds.B. Naming Acids • An acid is a molecule with one or more H+ ions attached to an anion.Rules for Naming Acids1. If the anion does not contain oxygen, the acid is named with the prefix hydro- and the suffix –ic attachedto the root name of the for the element. Acid Anion Name2. When the anion contains oxygen, the acid name is formed from the root name of the central element ofthe anion or the anion name, with a suffix of –ic or –ous. When the anion name ends in –ate, the suffix –ic isused. Acid Anion NameWhen the anion name ends in –ite, the suffix –ous is used in the acid name.