1 30131 (Nomenclature) 28 25 2 cations -

1  30131  (Nomenclature)  28  25 2 cations -

1 30131 (Nomenclature) 28 25 2 cations - name of atom + ion

Group 1A Ion Name + H Hydrogen ion Li+ Lithium ion Na+ Sodiumion K+ Potassium ion Group 2A Ion 2+ Mg Group 3A

Name Ion Name Magnesiumion Al3+ Aluminum ion Ca2+ Calcium ion Sr2+ Strontium ion Ba2+ Barium ion . 02/26/20 3

anions - end with -ide O2- - oxide; S2- - sulfide; F- - fluoride Cl- - chloride; Br- - bromide; I- - iodide see Table 3.1 p.58 . 02/26/20 Compounds containing polyatomic 4 ions Ca(OH)2 CuSO4

NH4NO3 Co2(CO3)3 - calcium hydroxide - copper(II) sulfate - ammonium nitrate - cobalt(III) carbonate . 02/26/20 Is it possible for a compound to have both ionic and covalent bonds? 5 covalent

Mg(NO3)2 ionic . 02/26/20 6 Names vs. Formulas Chemical Name - indicates what atoms are present in the compound Chemical Formula - short hand way of writing the name of the compound that indicates how many atoms of each element are present in the compound. MgCl2

1 Magnesium atom 2 Chlorine atoms . 02/26/20 Ionic Compounds 7 Binary Ionic Compounds Metal + nonmetal Ternary Ionic Compounds

Metal + polyatomic ion Binary Ionic Compounds with Transition Metals Transition metal + nonmetal Ternary Ionic Compounds with Transition Metals Transition Metal + polyatomic ion Ternary Ionic Compounds with 2 Polyatomic Ions . 02/26/20 Naming Binary Ionic Compounds 8

Name the metal ion. Name the nonmetal ion. Ex: NaCl Metal ion = sodium Nonmetal ion = chloride You try: LiCl MgO . 02/26/20 Writing formulas for Binary Ionic Compounds 9 Determine the oxidation number (charge) for each

ion . 02/26/20 +1 +2 02/26/20 -3 -2

-1 10 0 Determining Oxidation Numbers 11 Alkali Metals (group IA) --> +1 Alkaline Earth Metals (group IIA) --> +2 Transition Metals --> B group - exceptions C group - exceptions N group --> -3 O group --> -2 Halogens --> -1

Noble Gases --> 0 . 02/26/20 Writing formulas for Binary Ionic Compounds 12 Determine oxidation number. Ex: magnesium chloride Mg --> +2 Cl --> -1 - oxidation number

. 02/26/20 Writing formulas for Binary Ionic Compounds Mg+2 13 Cl-1 Only the number crosses, not the + or Dont write a 1 MgCl2 . 02/26/20

Practice! 14 Name the following: CaCl2 KF Li2O Write formulas for the following: Magnesium bromide Calcium sulfide Potassium chloride .

02/26/20 Answers 15 Calcium chloride Potassium fluoride Lithium oxide MgBr2 CaS KCl . 02/26/20 Naming Ternary Ionic Compounds

16 Name the metal Name the polyatomic ion Ex: Na2SO4 Metal --> sodium Polyatomic ion --> sulfate Name --> sodium sulfate Ex : LiNO3 Mg3(PO4)2 . 02/26/20

Writing formulas for Ternary Ionic Compounds17 Determine the oxidation number of the metal. Write the formula for the polyatomic ion. Cross over. Ex: lithium phosphite Li+1 (PO3)-3 Li3PO3 . 02/26/20 Practice! 18

Write the formula for the following: 1. Sodium nitrate 2. Magnesium sulfate 3. Potassium perchlorate Name the following: 1. KNO2 2. CaSO4 3. LiNO3 . 02/26/20 Answers

19 NaNO3 MgSO4 KClO4 Potassium nitrite Calcium sulfate Lithium nitrate . 02/26/20 Determining Oxidation States from Compounds 20

Oxidation state = charge Compounds are neutral, so the + charges have to equal the charges Ex: CuS S (group 16) -2 No subscripts, so we know the charges cancelled each other out So, Cu +2 . 02/26/20 Naming Binary Ionic Compounds with Transition Metals 21

Identify the transition metal in the formula. Determine the oxidation number of the transition metal. Name the transition metal. Use a roman numeral to note the oxidation number of the transition metal. Name the nonmetal ion. . 02/26/20 Naming Binary Ionic Compounds with Transition Metals

22 Ex: FeCl2 What is the transition metal? Fe What is the ox. Number of the t.metal? +2 What is the nonmetal ion? Cl Name: Iron (II) chloride You try: CuCl Cr2O3 . 02/26/20 Writing formulas for Binary Ionic Compounds

with Transition Metals 23 The roman numeral in the compound name gives the oxidation number of the metal ion. Ex: Iron (III) fluoride Metal --> Fe Metal ox. Number --> +3 Nonmetal --> F-1 Formula --> FeF3 . 02/26/20 Practice!

24 Name the following: 1. CrCl3 2. CuF2 3. CuF Write the formula for the following: 1. Iron (II) sulfide 2. Iron (III) sulfide 3. Copper (II) oxide . 02/26/20 Answers

25 Chromium (III) chloride Copper (II) fluoride Copper (I) fluoride FeS Fe2S3 CuO . 02/26/20 Naming Ternary Ionic Compounds with Transition Metals 26

Determine oxidation number of transition metal. Determine name of polyatomic ion. Name transition metal ion. Roman Numeral indicates the charge on the transition metal Name the polyatomic ion. Ex: Cu(NO3)2 is named Copper (II) nitrate . 02/26/20 Writing formulas for Ternary Ionic Compounds27 with Transition Metals Determine oxidation number of transition metal.

Write formula for polyatomic ion. Cross over. Ex: chromium (II) phosphate Cr+2 (PO4)-3 Cr3(PO4)2 . 02/26/20 Practice! 28 Name the following:

1. CuSO4 2. FePO4 3. Cr(NO3)3 Write the formula for the following: 1. Iron (II) nitrate 2. Copper (I) nitrate 3. Copper (II) perchlorate . 02/26/20 Answers 29

Copper (II) sulfate Iron (III) phosphate Chromium (III) nitrate Fe(NO3)2 CuNO3 Cu(ClO4)2 . 02/26/20 30 Another way Memorize the Latin names for the transition metal ions. Ex: Fe+3 = Ferric Ex: Fe+2 = Ferrous

Ex: FeCl3 is named 2 ways: Iron (III) chloride Ferric chloride . 02/26/20 Ternary Ionic Compounds with 2 Polyatomic Ions 31 The polyatomic cation has to be NH4+1! Name ammonium. Name polyatomic anion.

. 02/26/20 32 Naming Acids Acids always have hydrogen at the front of the formula Ex: HCl, HBr, HClO4, H2SO4 To Name Binary Acids (H + element) Hydro _____ ic Acid To Name Ternary Acids (H + polyatomic ion) Name the polyatomic ion If the polyatomic ion ends in -ate, the acid will end in -ic acid

If the polyatomic ion ends in -ite, the acid will end in -ous acid If the polyatomic ion ends in -ide, the acid will be named hydro _____ ic acid . 02/26/20 Examples 33 HCl - hydrochloric acid HBr - hydrobromic acid HF - hydrofluoric acid HNO3 - nitric acid (nitrate --> nitric) HNO2 - nitrous acid (nitrite -->nitrous)

HCN hydrocyanic acid . 02/26/20 Writing Formulas for Acids 34 Hydrogen always has +1 ox. Number Cross over charge of polyatomic ion. Ex: H+1 (SO4)-2 H2SO4

. 02/26/20 Naming Bases 35 Bases always have hydroxide (OH-1) as the anion KOH - potassium hydroxide Ca(OH)2 - calcium hydroxide Fe(OH)2 - iron (II) hydroxide . 02/26/20

Writing formulas for Bases 36 Determine the oxidation number for the cation. Cross over the oxidation number of the cation to the hydroxide. Mg+2 (OH)-1 Mg(OH)2 . 02/26/20

Martin S. Silberberg, Chemistry: The Molecular Nature of Matter and Change, McGraw-Hill Higher Education, 2004 Raymond Chang, Chemistry, Williams College, McGraw-Hill Higher Education, 2002

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