Chemistry: Ionic Compounds/ Polyatomic Ions

B) Ca(H2PO4)2
What formula represents the compound formed from calcium and dihydrogen phosphate?
A) Ca2(HPO4)2
B) Ca(H2PO4)2
C) Ca(HPO4)2
D) CaH2PO4
A) Acetate
What is the name for the polyatomic ion C2H3O2—?
A) Acetate
B) Hydrogen carbonate
C) Carbonate
C) x = 3, y = 2
What are the values of x and y in the formula Mgx(PO3)y?
A) x = 1, y = 2
B) x = 2, y = 3
C) x = 3, y = 2
D) x = 1, y = 2
B) Carbonate, CO32-
Which one of the pairs correctly matches the ion’s name with its formula?
A) Nitrate, NO2-
B) Carbonate, CO32-
C) Chlorate, ClO4—
D) Sulfate, SO32-
D) HSO3—
Identify the bisulfite ion.
A) SO32-
B) S2O62-
C) S2O32-
D) HSO3—
A) K+
Which ion will correctly complete the formula _________2HPO4?
A) K+
B) Al3+
C) Ca²+
D) F—
C) x = 2, y = 1
What are the values of x and y in the compound Nax(CrO4)y?
A) x = 3, y = 1
B) x = 3, y = 2
C) x = 2, y = 1
D) x = 1, y = 2
C) Na+
Which ion will form a compound with bicarbonate in a 1:1 cation to anion ratio?
A) Cl—
B) O2-
C) Na+
D) Mg2+
Which ion can correctly complete the formula Al2(__________)3?
A) Nitrate
B) Phosphate
C) Dichromate
D) Ammonium

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