1. Quiz – Formulas and Names - Rd 4
 For ionic compounds write the symbol and
charge of each ion then write the balanced formula.
  A B
Nickel (II) nitrate Iron (III) sulfate
Carbon disulfide Silicon tetrabromide
Indium selenide Zinc bromide
Calcium phosphate Magnesium nitrate
Nitrogen triiodide Dinitrogen pentoxide

2. Mg(OH)2 NI3 P2O5 CaCO3 SO3 Sc2S3 K3N Co3(PO4)2 Fe2(CO3)3 PBr3
Write the names for these compounds. (For ionic compounds write the symbol and charge of each ion.)
  A B
Mg(OH)2 NI3
P2O5 CaCO3
SO3 Sc2S3
K3N Co3(PO4)2
Fe2(CO3)3 PBr3

3. A
Nickel (II) nitrate Ni2+ NO31- Ni(NO3)2
Carbon disulfide CS2
Indium selenide In3+ Se2- In2Se3
Calcium phosphate Ca2+ PO43- Ca3(PO4)2
Nitrogen triiodide NI3

4. Iron (III) sulfate Fe3+ (SO4)2- Fe2(SO4)3 Silicon tetrabromide SiBr4
Silicon tetrabromide SiBr4
Zinc bromide Zn2+ Br1- ZnBr2
Magnesium nitrate Mg2+ (NO3)1- Mg(NO3)2
Dinitrogen pentoxide N2O5

5. Mg(OH)2 Mg2+ (OH)- Magnesium hydroxide
P2O5 Diphosphorous pentoxide
SO3 Sulphur trioxide
K3N K+ N3- Potassium Nitride
Fe2(CO3)3 Fe3+ (CO3)2- Iron (III) carbonate

6. CaCO3 Ca2+ (CO3)2- calcium carbonate Sc2S3 Sc3+ S2- scandium sulfide
NI3 nitrogen triiodide
CaCO3 Ca2+ (CO3)2- calcium carbonate
Sc2S3 Sc3+ S2- scandium sulfide
Co3(PO4)2 Co2+ (PO4)3- cobalt (II) phosphate
PBr phosphorus tribromide