Chemistry – Jan 23, 2018 P3 Challenge- Today’s Objective – Polyatomic Ion Quiz 3 – only best attempt counts (Caught cheating on any trial – 0 averaged with best score on all others) Get out Ionic Compounds Homework Table HMK when done. Today’s Objective – Ionic Compound Nomenclature (You will need your colored periodic table today)

Chemistry – Jan 23, 2018 Objective – Ionic compound nomenclature Assignment: Ionic Compounds Worksheet Agenda Polyatomic ion quiz 3 Writing ionic formulas HMK Type I Ionic Nomenclature Type II Ionic Nomenclature Polyatomic ions

Homework Review zinc iron (II) iron (III) gallium silver lead (IV)   zinc iron (II) iron (III) gallium silver lead (IV) chloride ZnCl2 FeCl2  FeCl3  GaCl3  AgCl  PbCl4  acetate Zn(C2H3O2)2 Fe(C2H3O2)2 Fe(C2H3O2)3 Ga(C2H3O2)3 AgC2H3O2  Pb(C2H3O2)4 nitrate Zn(NO3)2  Fe(NO3)2   Fe(NO3)3   Ga(NO3)3   AgNO3   Pb(NO3)4   oxide ZnO  FeO  Fe2O3   Ga2O3 Ag2O  PbO2  nitride Zn3N2  Fe3N2   FeN  GaN  Ag3N  Pb3N4  sulfate ZnSO4  FeSO4   Fe2(SO4)3   Ga2(SO4)3  Ag2SO4 Pb(SO4)2 

Three types of ionic compounds Type 1 - Binary compound (contains only two elements) and cation charge is known because atom can form only one type of ion. Metal forms only one type of ion: Groups 1A, 2A, Al3+, Ga3+, Zn2+, Cd2+, and Ag+ Type 2 – Binary compound with variable charge cations. Transition metals and representative metals. Type 3 – Polyatomic ion compound contains three or more elements contained within one or two polyatomic ions.

Type 1 Ionic Compounds Formed by electron transfer from a metal to a nonmetal Metal forms only one type of ion: Groups 1A, 2A, Al3+, Ga3+, Zn2+, Cd2+, and Ag+ Name as metal nonmetalide Name Formula sodium chloride KBr calcium oxide Al2O3 lithium fluoride ZnI2 beryllium nitride Ag2S

Type 2 Ionic compounds – Transition Metals Most transition metals and group 13-16 metals form multiple ions. Cr, Fe and Co form 2+ and 3+ ions Cu forms 1+ and 2+ ions Sn, Pb form 2+ and 4+ ions Mercury (II) is Hg2+, while Mercury (I) is Hg22+ Named as metal (roman numeral for charge on metal) nonmetalide Name Formula lead (II) oxide CuO tin (IV) fluride Au2S copper (I) bromide CoP iron (III) selenide Cr3N2

Type 3 Ionic compounds – polyatomic ions Formula will have more than two elements Often includes oxygen Often includes () around a polyatomic ion Name as cation anion Name Formula sodium carbonate CuOH tin (II) cyanide Mg(ClO2)2 ammonium nitrate FePO4 barium sulfate LiN02

Exit Slip - Homework Exit Slip: Name Ca(OH)2 Write the formula for Iron (II) sulfate What’s Due? (Pending assignments to complete.) Ionic Compounds Worksheet What’s Next? (How to prepare for the next day) Read Holt p159-175