Statistics for Polyatomic Ions for AP Chem

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Charge	Polyatomic Ion Formula	Name	% Correct
1+	NH4	Ammonium	92%
1-	NO3	Nitrate	77%
1-	OH	Hydroxide	74%
3-	PO4	Phosphate	74%
2-	SO4	Sulfate	73%
1-	ClO3	Chlorate	72%
1-	NO2	Nitrite	72%
1-	BrO3	Bromate	71%
2-	CrO4	Chromate	69%
1-	CN	Cyanide	69%
2-	SO3	Sulfite	69%
2-	CO3	Carbonate	67%
3-	PO3	Phosphite	67%
1-	ClO2	Chlorite	66%
1-	BrO2	Bromite	64%
1-	IO3	Iodate	63%
1-	ClO4	Perchlorate	58%
1-	MnO4	Permanganate	53%
1-	C2H3O2	Acetate	51%
3-	AsO4	Arsenate	47%
1-	HCO3	Hydrogen Carbonate (Bicarbonate)	45%
1-	ClO	Hypochlorite	43%
2-	Cr2O7	Dichromate	39%
2-	O2	Peroxide	30%
1-	SCN	Thiocyanate	26%
2-	C2O4	Oxalate	23%