Notes 7&9A Ionic and Molecular Compounds Writing Formulas and Naming

Na Cl Mg Cl Na 1+ Cl 1- Mg 2+ Cl 1- NaClMgCl 2 sodium chloride magnesium chloride Na Cl Mg Cl Na 1+ Cl 1- Mg 2+ Cl 1- NaClMgCl 2 sodium chloride magnesium chloride

Li OAl Cl Li 1+ O 2- Al 3+ Cl 1- Li 2 OAlCl 3 lithium oxide aluminum chloride Li OAl Cl Li 1+ O 2- Al 3+ Cl 1- Li 2 OAlCl 3 lithium oxide aluminum chloride

Al OK I Al 3+ O 2- K 1+ I 1- Al 2 O 3 KI aluminum oxide potassium iodide Al OK I Al 3+ O 2- K 1+ I 1- Al 2 O 3 KI aluminum oxide potassium iodide

Ca Br Ga S Ca 2+ Br 1- Ga 3+ S 2- CaBr 2 Ga 2 S 3 calcium bromide gallium sulfide Ca Br Ga S Ca 2+ Br 1- Ga 3+ S 2- CaBr 2 Ga 2 S 3 calcium bromide gallium sulfide

Mg N Ba O Mg 2+ N 3- Ba 2+ O 2- Mg 3 N 2 BaO magnesium nitride barium oxide Mg N Ba O Mg 2+ N 3- Ba 2+ O 2- Mg 3 N 2 BaO magnesium nitride barium oxide

Fe 2+ O Fe 3+ O Fe 2+ O 2- Fe 3+ O 2- FeO Fe 2 O 3 Iron(II) oxide iron(III) oxide Fe 2+ O Fe 3+ O Fe 2+ O 2- Fe 3+ O 2- FeO Fe 2 O 3 Iron(II) oxide iron(III) oxide

Notes 7&9 B K 1+ NO 3 1- K 1+ NO 3 1- KNO 3 KNO 3 potassium nitrate potassium nitrate Na 1+ SO 3 2- Na 1+ SO 3 2- Na 2 SO 3 Na 2 SO 3 sodium sulfite sodium sulfite

Ca 2+ SO 3 2- Ca 2+ SO 3 2- CaSO 3 CaSO 3 calcium sulfite calcium sulfite Al 3+ C 2 H 3 O 2 1- Al 3+ C 2 H 3 O 2 1- Al(C 2 H 3 O 2 ) 3 Al(C 2 H 3 O 2 ) 3 aluminum acetate aluminum acetate

NH 4 1+ PO 4 3- NH 4 1+ PO 4 3- (NH 4 ) 3 PO 4 (NH 4 ) 3 PO 4 ammonium phosphate ammonium phosphate Fe 3+ OH 1- Fe 3+ OH 1- Fe(OH) 3 Fe(OH) 3 Iron (III) hydroxide Iron (III) hydroxide

Notes 7&9 C Name  Ions  Formula Name  Ions  Formula lithium oxide strontium fluoride lithium oxide strontium fluoride Li 1+ O 2- Sr 2 + F 1- Li 2 O SrF 2 Li 2 O SrF 2

chromium (III) sulfide zinc acetate Cr 3+ S 2- Zn 2+ C 2 H 3 O 2 1- Cr 2 S 3 Zn(C 2 H 3 O 2 ) 2

ammonium hydroxidecalcium nitrate NH 4 1+ OH - Ca 2+ NO 3 1- NH 4 OH Ca(NO 3 ) 2 NH 4 OH Ca(NO 3 ) 2

lead (IV) sulfitetin (II) hydroxide lead (IV) sulfitetin (II) hydroxide Pb 4+ SO 3 2- Sn 2+ OH 1- Pb 4+ SO 3 2- Sn 2+ OH 1- Pb(SO 3 ) 2 Sn(OH) 2 Pb(SO 3 ) 2 Sn(OH) 2

Notes 7&9 D Formula  Ions  Name MgSNaBr Mg 2+ S 2- Na 1+ Br 1- magnesium sulfidesodium bromide

CaCl 2 CuCl 2 Ca 2+ Cl 1- Cu 2+ Cl 1- Ca 2+ Cl 1- Cu 2+ Cl 1- calcium chloridecopper(II) chloride

NH 4 ClKNO 2 NH 4 ClKNO 2 NH 4 1+ Cl 1- K 1+ NO 2 1- NH 4 1+ Cl 1- K 1+ NO 2 1- ammonium chloridepotassium nitrite

(NH 4 ) 2 SO 4 FeSO 4 (NH 4 ) 2 SO 4 FeSO 4 NH 4 1+ SO 4 2- Fe 2+ SO 4 2- NH 4 1+ SO 4 2- Fe 2+ SO 4 2- ammonium sulfateiron(II)sulfate ammonium sulfateiron(II)sulfate

Na 2 SO 3 Mn(CH 3 COO) 2 Na 1+ SO 3 2- Mn 2+ C 2 H 3 O 2 1- sodium sulfitemanganese(II) acetate

Pb(NO 3 ) 4 Hg 3 (PO 4 ) 2 Pb 4+ NO 3 1- Hg 2+ PO 4 3- lead(IV) nitratemercury(II) phosphate

PbSO 4 HG 3 (PO 4 ) 2 PbSO 4 HG 3 (PO 4 ) 2 Pb 2+ SO 4 2- HG 2+ PO 4 3- lead(II)sulfatemercury (II) phosphate Pb 2+ SO 4 2- HG 2+ PO 4 3- lead(II)sulfatemercury (II) phosphate

Binary Molecular Compounds 7&9 E 2 nonmetals – not ions 2 nonmetals – not ions Prefix Prefix Mono1 Mono1 Di2 Di2 Tri3 Tri3 Tetra4 Tetra4 Penta5 Penta5 Hexa6 Hexa6 Hepta7 Hepta7

Octa8 Octa8 Nona9 Nona9 Deca10 Deca10

N 2 O dinitrogen monoxide N 2 O dinitrogen monoxide all end in –ide all end in –ide SF 6 sulfur hexafloride SF 6 sulfur hexafloride omit mono when the first element has one atom omit mono when the first element has one atom CO carbon monoxide CO carbon monoxide Cl 2 O 8 dichlorine octoxide Cl 2 O 8 dichlorine octoxide

SiC silicon monocarbide SiC silicon monocarbide N 2 O 4 dinitrogen tetroxide N 2 O 4 dinitrogen tetroxide NCl 3 nitrogen trichloride NCl 3 nitrogen trichloride N 2 H 4 dinitrogen tetrahydride N 2 H 4 dinitrogen tetrahydride N 2 O 3 dinitrogen trioxide N 2 O 3 dinitrogen trioxide