What is the formula and charge of the ammonium ion?	NH₄⁺
What is the name of the polyatomic ion NH₄⁺?	Ammonium
What is the formula and charge of the hydronium ion?	H₃O⁺
What is the name of the polyatomic ion H₃O⁺?	Hydronium
What is the formula and charge of the hydroxide ion?	OH⁻
What is the name of the polyatomic ion OH⁻?	Hydroxide
What is the formula and charge of the cyanide ion?	CN⁻
What is the name of the polyatomic ion CN⁻?	Cyanide
What is the formula and charge of the nitrate ion?	NO₃⁻
What is the name of the polyatomic ion NO₃⁻?	Nitrate
What is the formula and charge of the nitrite ion?	NO₂⁻
What is the name of the polyatomic ion NO₂⁻?	Nitrite
What is the formula and charge of the sulfate ion?	SO₄²⁻
What is the name of the polyatomic ion SO₄²⁻?	Sulfate
What is the formula and charge of the sulfite ion?	SO₃²⁻
What is the name of the polyatomic ion SO₃²⁻?	Sulfite
What is the formula and charge of the hydrogen sulfate (bisulfate) ion?	HSO₄⁻
What is the name of the polyatomic ion HSO₄⁻?	Hydrogen sulfate (or bisulfate)
What is the formula and charge of the hydrogen sulfite (bisulfite) ion?	HSO₃⁻
What is the name of the polyatomic ion HSO₃⁻?	Hydrogen sulfite (or bisulfite)
What is the formula and charge of the carbonate ion?	CO₃²⁻
What is the name of the polyatomic ion CO₃²⁻?	Carbonate
What is the formula and charge of the hydrogen carbonate (bicarbonate) ion?	HCO₃⁻
What is the name of the polyatomic ion HCO₃⁻?	Hydrogen carbonate (or bicarbonate)
What is the formula and charge of the phosphate ion?	PO₄³⁻
What is the name of the polyatomic ion PO₄³⁻?	Phosphate
What is the formula and charge of the azide ion?	N₃⁻
What is the name of the polyatomic ion N₃⁻?	Azide
What is the formula and charge of the hydrogen phosphate ion?	HPO₄²⁻
What is the name of the polyatomic ion HPO₄²⁻?	Hydrogen phosphate
What is the formula and charge of the dihydrogen phosphate ion?	H₂PO₄⁻
What is the name of the polyatomic ion H₂PO₄⁻?	Dihydrogen phosphate
What is the formula and charge of the acetate ion?	C₂H₃O₂⁻ (or CH₃COO⁻)
What is the name of the polyatomic ion C₂H₃O₂⁻?	Acetate
What is the formula and charge of the permanganate ion?	MnO₄⁻
What is the name of the polyatomic ion MnO₄⁻?	Permanganate
What is the formula and charge of the perchlorate ion?	ClO₄⁻
What is the name of the polyatomic ion ClO₄⁻?	Perchlorate
What is the formula and charge of the chlorate ion?	ClO₃⁻
What is the name of the polyatomic ion ClO₃⁻?	Chlorate
What is the formula and charge of the chlorite ion?	ClO₂⁻
What is the name of the polyatomic ion ClO₂⁻?	Chlorite
What is the formula and charge of the hypochlorite ion?	ClO⁻
What is the name of the polyatomic ion ClO⁻?	Hypochlorite
What is the formula and charge of the chromate ion?	CrO₄²⁻
What is the name of the polyatomic ion CrO₄²⁻?	Chromate
What is the formula and charge of the dichromate ion?	Cr₂O₇²⁻
What is the name of the polyatomic ion Cr₂O₇²⁻?	Dichromate
What is the formula and charge of the oxalate ion?	C₂O₄²⁻
What is the name of the polyatomic ion C₂O₄²⁻?	Oxalate
What is the formula and charge of the peroxide ion?	O₂²⁻
What is the name of the polyatomic ion O₂²⁻?	Peroxide
What is the formula and charge of the thiocyanate ion?	SCN⁻
What is the name of the polyatomic ion SCN⁻?	Thiocyanate
What is the formula and charge of the thiosulfate ion?	S₂O₃²⁻
What is the name of the polyatomic ion S₂O₃²⁻?	Thiosulfate
What is the formula and charge of the iodate ion?	IO₃⁻
What is the name of the polyatomic ion IO₃⁻?	Iodate
In oxyanion nomenclature, the suffix _____ indicates one fewer oxygen atom than the suffix -ate.	-ite
In oxyanion nomenclature, the suffix -ite indicates one fewer oxygen atom than the suffix _____.	-ate
The prefix _____ designates an oxyanion with one more oxygen atom than the standard -ate ion.	per-
The prefix _____ designates an oxyanion with one fewer oxygen atom than the corresponding -ite ion.	hypo-
Adding a proton (H⁺) to a polyatomic oxyanion increases its overall charge by _____.	+1
The prefix _____ in an ion name indicates that an oxygen atom has been replaced by a sulfur atom.	thio-
Among common polyatomic ions, _____ (NH₄⁺) is the most widely encountered polyatomic cation.	ammonium