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WorksheetsIntroduction to Ionic Formulas and Polyatomic Ions
Total questions: 43
Worksheet time: 22mins
When writing an ionic chemical formula, which species is written on the left?
write element by mass
order does not matter
anion is written first
cation is written first
Which formula is correct for sodium oxide formed from Na+ and O2−?
Na2O
Na3O2
NaO2
NaO
Potassium fluoride forms from K+ and F−. Which formula is correct?
K2F2
KF2
KF
K2F
Which is the correct formula for calcium chloride using Ca2+ and Cl−?
CaCl
Ca2Cl2
CaCl2
Ca2Cl
Choose the correct formula for aluminum oxide from Al3+ and O2−.
Al3O2
Al2O3
AlO2
AlO
Which formula represents iron(II) sulfide from Fe2+ and S2−?
FeS2
FeS
Fe2S3
Fe2S
Nickel(II) chloride results from Ni2+ and Cl−. Select the correct formula.
NiCl
NiCl2
Ni2Cl
Ni2Cl2
Which is the correct formula for potassium phosphide from K+ and P3−?
KP3
KP
K3P
K2P3
Magnesium nitride forms from Mg2+ and N3−. Choose the correct formula.
MgN
Mg2N3
Mg3N2
Mg3N
Name the polyatomic ion with formula SO4 2−.
sulfonate
sulfoxide
sulfite
sulfate
Name the polyatomic ion with formula PO3 3−.
phosphide
hypophosphate
phosphite
phosphate
Name the polyatomic ion with formula PO4 3−.
pyrophosphate
phosphide
phosphite
phosphate
Name the polyatomic ion with formula CO3 2−.
carbonite
carbide
bicarbonate
carbonate
Name the polyatomic ion with formula HCO3−.
formate
carboxylate
hydrogen carbonite
hydrogen carbonate
Name the polyatomic ion with formula ClO3−.
perchlorate
chlorite
chlorate
hypochlorite
Name the polyatomic ion with formula ClO4−.
chlorate
chlorite
perchlorate
hypochlorite
Name the polyatomic ion with formula ClO−.
perchlorate
chlorate
chlorite
hypochlorite
Name the polyatomic ion with formula ClO2−.
hypochlorite
chlorite
chlorate
perchlorate
Name the polyatomic ion with formula NH4+.
ammonium
ammonia
azanium
amine cation
What is the correct name for Na2CO3?
Sodium carbonate
Sodium carbonite
Disodium carbonide
Sodium carbonyl salt
Which formula represents magnesium bromide?
Mg2Br
MgBr2
MgBr
Mg2Br3
Provide the correct name for MgCl2.
Magnesium chloride
Magnesium chlorite
Magnesium dichloride
Magnesium chlorate
What is the proper name for KCl?
Potassium chloramide
Potassium chlorite
Potassium chloride
Potassium chlorate
Identify the name for FeCl2 using stock nomenclature.
Ferrous(III) chloride
Iron(III) chloride
Iron chloride
Iron(II) chloride
What is the correct name for Zn(OH)2?
Zinc(II) hydroxide
Zinc dihydroxide
Zinc hydroxide
Zinc oxide hydroxide
Choose the correct name for BeSO4.
Beryllium sulfate
Beryllium sulfide
Beryllium sulfite
Beryllium bisulfate
Which formula corresponds to sodium phosphide?
NaP
Na2P3
NaPO3
Na3P
What is the correct formula for magnesium nitrate?
Mg2(NO3)3
Mg(NO2)2
MgNO3
Mg(NO3)2
Determine the formula for calcium phosphate.
Ca3(PO4)2
Ca(PO4)2
Ca2(PO4)3
Ca3PO4
What is the correct formula for lithium phosphate?
Li3PO4
LiPO4
Li3(PO4)2
Li2PO4
Select the formula for ammonium sulfate.
(NH4)2SO4
(NH4)SO4
NH4SO4
(NH4)2SO3
Which name matches Fe2O3?
Iron(II) oxide
Ferric(II) oxide
Iron(III) oxide
Iron oxide
Choose the correct formula for aluminum sulfide.
Al2(SO3)3
Al3S2
AlS
Al2S3
What is the formula for beryllium chloride?
Be2Cl
Be2Cl3
BeCl2
BeCl
Name the compound Na3PO4.
Sodium phosphite
Sodium(III) phosphate
Trisodium phosphate
Sodium phosphate
Which sulfate salt fits a cation of K+ and anion of SO4 2−?
KSO3
K2SO4
K2SO3
KSO4
Complete the nitrate for Mg2+ with NO3−.
Mg(NO3)2
MgNO3
Mg(NO2)2
Mg2(NO3)2
Which hydroxide formula correctly matches Al3+ with OH−?
Al(OH)3
AlOH3
Al(OH)2
Al2(OH)3
Choose the correct nitrate for Fe2+ with NO3−.
FeN2O6
Fe(NO3)2
Fe2NO3
Fe(NO3)3
Select the correct sulfate for Li+ with SO4 2−.
Li2SO4
LiSO4
Li2SO3
LiSO3
What is the correct formula for ammonium phosphate?
(NH4)3P2O8
NH4PO4
(NH4)2PO4
(NH4)3PO4
Name the polyatomic ion with formula C2H3O2−.
oxalate
malate
acetate
formate
Which is the correct formula for iron(III) oxide?
Fe2O3
Fe3O4
FeO2
FeO
