chapter 5.8 & 5.9 - naming & formula writing for ionic compounds

Chapter 5.8 & 5.9 -Chapter 5.8 & 5.9 -Naming & Formula Naming & Formula Writing for Ionic Writing for Ionic

CompoundsCompounds

Naming Binary Ionic Naming Binary Ionic CompoundsCompounds

Binary Ionic Compounds: contain 2 Binary Ionic Compounds: contain 2 different elements: different elements: metal + non-metal + non-metalmetal

Name the Name the metal firstmetal first, then the , then the nonmetal as nonmetal as -ide-ide..

Examples:Examples:

NaClNaCl sodium chlorsodium chlorideide

ZnIZnI22 zinc iodzinc iodideide

AlAl22OO33 aluminum oxaluminum oxideide

Learning Check Learning Check

Name the following binary compounds:Name the following binary compounds:

1. Na1. Na33NN ________________________________

2. KBr2. KBr ________________________________

3. Al3. Al22OO33 ________________________________

4. MgS4. MgS ________________________________

Solution Solution

Complete the names of the following Complete the names of the following binary compounds:binary compounds:

NaNa33NN sodium sodium nitridenitride

KBrKBr potassiumpotassium bromidebromide

AlAl22OO33 aluminum aluminum oxideoxide

MgSMgS magnesiummagnesium sulfidesulfide

Naming Ionic Compounds Naming Ionic Compounds Containing Multi-Valent IonsContaining Multi-Valent Ions

Use a roman numeral after the name of a Use a roman numeral after the name of a metal that is multi-valent (i.e. that has metal that is multi-valent (i.e. that has more than one possible charge)more than one possible charge)

Examples:Examples:

FeClFeCl33 (Fe(Fe3+3+)) iron (III) chlorideiron (III) chloride

CuClCuCl (Cu(Cu++ ) ) copper (I) chloridecopper (I) chloride

SnFSnF44 (Sn(Sn4+4+)) tin (IV) fluoridetin (IV) fluoride

PbClPbCl22 (Pb(Pb2+2+)) lead (II) chloridelead (II) chloride

FeFe22SS33 (Fe(Fe3+3+)) iron (III) iron (III) sulfidesulfide


Complete the names of the following Complete the names of the following

binary compounds with multi-valent metal binary compounds with multi-valent metal

ions:ions:

FeBrFeBr22 iron (_____) bromideiron (_____) bromide

CuCu22OO copper (_____) oxidecopper (_____) oxide

SnClSnCl44 ______(_____ )______________(_____ )________

FeFe22OO33 _______(_____)_______________(_____)________

CuSCuS _______(_____)_______________(_____)________

Solution Solution

Complete the names of the following Complete the names of the following

binary compounds with variable metal binary compounds with variable metal

ions:ions:

FeBrFeBr22 iron (iron (IIII) bromide) bromide

CuCu22OO copper (copper (II) oxide) oxide

SnClSnCl44 tintin ((IVIV)) chloridechloride

FeFe22OO33 ironiron ((IIIIII)) oxideoxide

CuSCuS coppercopper ((IIII)) sulfidesulfide

Learning Check Learning Check Name the following compounds:Name the following compounds:A. A. CaOCaO

1) calcium oxide 1) calcium oxide 2) calcium(I) oxide2) calcium(I) oxide3) calcium (II) oxide3) calcium (II) oxide

B. B. SnClSnCl44 1) tin tetrachloride1) tin tetrachloride2) tin(II) chloride 2) tin(II) chloride 3) tin(IV) chloride3) tin(IV) chloride

C. CoC. Co22OO33

1) cobalt oxide 1) cobalt oxide 2) cobalt (III) oxide2) cobalt (III) oxide3) cobalt trioxide3) cobalt trioxide

Solution Solution

Name the following compounds:Name the following compounds:

A. A. CaOCaO 1) calcium oxide1) calcium oxide

B. B. SnClSnCl44 3) tin(IV) chloride3) tin(IV) chloride

C.C. CoCo22OO33 2) cobalt (III) oxide2) cobalt (III) oxide

Naming Ternary Ionic Naming Ternary Ionic CompoundsCompounds

Contain at least 3 elementsContain at least 3 elements Name the nonmetals as a Name the nonmetals as a polyatomic polyatomic

ionion Examples:Examples:

NaNONaNO33 Sodium Sodium nitratenitrate

KK22SOSO44 Potassium Potassium sulfatesulfate

Al(HCOAl(HCO33))33AluminumAluminum bicarbonatebicarbonate

oror AluminumAluminum hydrogen hydrogen carbonatecarbonate


Match each set with the correct name:Match each set with the correct name:

A.A. NaNa22COCO33 1) magnesium sulfite1) magnesium sulfite

MgSOMgSO33 2) magnesium sulfate2) magnesium sulfate

MgSOMgSO44 3) sodium carbonate3) sodium carbonate

B.B. Ca(HCOCa(HCO33))22 1) calcium carbonate1) calcium carbonate

CaCOCaCO33 2) calcium phosphate2) calcium phosphate

CaCa33(PO(PO44))2 2 3) calcium 3) calcium bicarbonatebicarbonate

Solution Solution

A.A. NaNa22COCO33 3) sodium carbonate 3) sodium carbonate

MgSOMgSO33 1) magnesium sulfite1) magnesium sulfite

MgSOMgSO44 2) magnesium sulfate2) magnesium sulfate

B.B. Ca(HCOCa(HCO33))22 3) calcium 3) calcium

bicarbonatebicarbonate

CaCOCaCO33 1) calcium carbonate1) calcium carbonate

CaCa33(PO(PO44))2 2 2) calcium 2) calcium phosphatephosphate


A. aluminum nitrate A. aluminum nitrate

1) AlNO1) AlNO3 3 2) Al(NO)2) Al(NO)33 3) Al(NO3) Al(NO33))33

B. copper(II) nitrateB. copper(II) nitrate

1) CuNO1) CuNO33 2) Cu(NO2) Cu(NO33))22 3) Cu3) Cu22(NO(NO33))

C. Iron (III) hydroxideC. Iron (III) hydroxide

1) FeOH1) FeOH 2) Fe2) Fe33OHOH 3) Fe(OH)3) Fe(OH)33

D. Tin(IV) hydroxideD. Tin(IV) hydroxide

1) Sn(OH)1) Sn(OH)44 2) Sn(OH)2) Sn(OH)22 3) 3)

SnSn44(OH)(OH)

Solution Solution

A. aluminum nitrate A. aluminum nitrate

3) Al(NO3) Al(NO33))33

B. copper(II) nitrateB. copper(II) nitrate

2) Cu(NO2) Cu(NO33))22

C. Iron (III) hydroxideC. Iron (III) hydroxide

3) Fe(OH)3) Fe(OH)33

D. Tin(IV) hydroxideD. Tin(IV) hydroxide

1) Sn(OH)1) Sn(OH)44

Formula Writing For Ionic Compounds Formula Writing For Ionic Compounds (using magnesium chloride as an example)(using magnesium chloride as an example)

Step 1: Write the symbol with the ionic charge Step 1: Write the symbol with the ionic charge for the metal ion followed by the non-metal ion.for the metal ion followed by the non-metal ion. Mg Mg 22++ ClCl 11--

Step 2: Use the “criss-cross” rule to place Step 2: Use the “criss-cross” rule to place subscripts beside opposing ions – this will subscripts beside opposing ions – this will ensure an overall charge of zero in the ionic ensure an overall charge of zero in the ionic formula. formula. MgMg11 Cl Cl2 2

Step 3: Simplfy (if possible) Step 3: Simplfy (if possible) Mg ClMg Cl2 2 (subscripts of 1 are not (subscripts of 1 are not

shown)shown)

Formula Writing For Ionic Formula Writing For Ionic Compounds Compounds

E.g. 2 Write the chemical formula for E.g. 2 Write the chemical formula for aluminum aluminum nitratenitrate. . Step 1: Step 1: Al Al 33++ NONO33

11--

Step 2: Step 2: Al Al 11 Cl Cl 3 3

Step 3:Step 3: Al ClAl Cl33

E.g. 3 Write the chemical formula for E.g. 3 Write the chemical formula for calcium oxidecalcium oxide. . Step 1: Step 1: Ca Ca 22++ OO 22--

Step 2: Step 2: Ca Ca 22 O O 2 2 * * bothboth subscripts divisible subscripts divisible

by twoby two

Step 3:Step 3: Ca OCa O


E.g. 4 Write the chemical formula for E.g. 4 Write the chemical formula for iron iron (III) oxide(III) oxide. . Step 1: Step 1: Fe Fe 33++ OO 22--

Step 2: Step 2: Fe Fe22 O O3 3

Step 3:Step 3: FeFe22 O O33

E.g. 5 Write the chemical formula for E.g. 5 Write the chemical formula for calcium calcium sulfatesulfate Step 1: Step 1: Ca Ca 22++ SOSO44

22--

Step 2: Step 2: Ca Ca 22 (SO (SO44) ) 22

Step 3: Step 3: CaSOCaSO44


E.g. 6 Write the chemical formula for E.g. 6 Write the chemical formula for barium phosphatebarium phosphate. . Step 1: Step 1: Ba Ba 22++ POPO44

33--

Step 2: Step 2: Ba Ba33 (PO (PO44))2 2

Step 3:Step 3: BaBa33 (PO (PO44))2 2

E.g. 7 Write the chemical formula for E.g. 7 Write the chemical formula for aluminum tripolyphosphate.aluminum tripolyphosphate. Step 1: Step 1: Al Al 33++ PP33OO1010

55--

Step 2: Step 2: Al Al 55 (P(P33OO1010)) 33

Step 3: Step 3: Al Al 5 5 (P(P33OO1010)) 33

Homework:Homework:

Q.1-9 p.195.Q.1-9 p.195. Q.1-7 p.198.Q.1-7 p.198.

chapter 5.8 & 5.9 - naming & formula writing for ionic compounds

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