CaCl2 = calcium chloride Naming Compounds Binary Ionic Compounds – consist of only 2 different elements, a metal and nonmetal 1. cation (metal) first, then anion (nonmetal) 2. metal = name of the element Ca2+ = calcium ion 3. nonmetal = root + -ide Cl = chloride CaCl2 = calcium chloride

Naming when you know the metal’s charge:  metal is group 1, group 2, or Al3+, Zn2+, Ag+  no Roman numerals (plain style) K2O = potassium oxide NOT potassium (I) oxide

PbCl2 = lead (II) chloride Naming when you don’t know the metals charge from periodic table: Roman Numeral Style  metal can have different charges, it depends on the compound  use Roman numeral in name PbCl2 Pb2+ is cation PbCl2 = lead (II) chloride

Figure 2.22: The common cations and anions

P2O5 = diphosphorus pentoxide Naming for covalent compounds:  Compounds between two nonmetals  Use prefixes: 1 = mono 2 = di 3 = tri 4 = tetra 5 = penta 6 = hexa  Never use mono- with the first element P2O5 = diphosphorus pentoxide CO = carbon monoxide

Chromium (III) sulfide Rubidium oxide Aluminum fluoride Titanium (IV) oxide Carbon tetrachloride Nickel (I) sulfide

p. 100

Give the name of each of the following compounds. Na2SO4 b. K3PO4 Naming Compounds That Contain Polyatomic Ions Give the name of each of the following compounds. Na2SO4 b. K3PO4 c. Fe(NO3)3 d. Mn(OH)2 e. Na2S

Ammonium sulfide Copper (II) sulfate Zinc nitrate Chromium (III) carbonate Magnesium phosphate Titanium sulfite

Name the following: H2S Na3PO4 CH3CO2H KCN H2SO4 CaCO3

Calcium acetate Iron (III) nitrite Chloric acid Methane Sodium hypochlorite

A flowchart for naming acids A flowchart for naming acids. An acid is best considered as one or more H+ ions attached to an anion.

Name the following: HNO2 NaClO2 KMnO4 NaCN (NH4)3PO4 H2CO3