Arkansas State University Department of Chemistry and Physics

Students enrolled in Dr. Draganjac's Introduction to Chemistry (CHEM1003), General Chemistry I (CHEM1013) and General Chemistry II (CHEM1023) classes are responsible for learning the names and formulae for the common acids and common reagents and for learning the names, formulae and the charges for the common cations and anions listed below:
 

Common Cations (Grouped by Charge):

Name	Formula	Other name
+1 ions:
Ammonium	NH4+
Copper(I)	Cu+	Cuprous
Hydrogen	H+	Proton
Hydronium	H3O+
Lithium	Li+
Nitronium	NO2+
Potassium	K+
Silver	Ag+
Sodium	Na+
+2 ions:
Barium	Ba+2
Calcium	Ca+2
Chromium(II)	Cr+2	Chromous
Copper(II)	Cu+2	Cupric
Iron(II)	Fe+2	Ferrous
Lead(II)	Pb+2
Magnesium	Mg+2
Manganese(II)	Mn+2	Manganous
Mercury(I)	Hg2+2	Mercurous
Mercury(II)	Hg+2	Mercuric
Strontium	Sr+2
Tin(II)	Sn+2	Stannous
Zinc	Zn+2
+3 ions:
Chromium(III)	Cr+3	Chromic
Aluminum	Al+3
Iron(III)	Fe+3	Ferric
Manganese(III)	Mn+3	Manganic
+4 ions:
Tin(IV)	Sn+4	Stannic

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Common Anions (Grouped by Charge):

-1 ions:
Hydride	H-	Nitrate	NO3-
Fluoride	F-	Nitrite	NO2-
Chloride	Cl-	Perchlorate	ClO4-
Bromide	Br-	Chlorate	ClO3-
Iodide	I-	Chlorite	ClO2-
Cyanide	CN-	Hypochlorite	OCl-
Cyanate	OCN-	Iodate	IO3-
Thiocyanate	SCN-	Bromate	BrO3-
Hydroxide	OH-	Hypobromite	OBr-
Amide	NH2-	Permanganate	MnO4-
Acetate	CH3COO-	Dihydrogen phosphate	H2PO4-
Formate	HCOO-	Hydrogen sulfate	HSO4-
Hydrogen carbonate or Bicarbonate	HCO3-
-2 ions:
Oxide	O2-	Hydrogen phosphate	HPO42-
Sulfide	S2-	Chromate	CrO42-
Sulfate	SO42-	Dichromate	Cr2O72-
Thiosulfate	S2O32-	Carbonate	CO32-
Sulfite	SO32-	Oxalate	C2O42-
Peroxide	O22-
-3 ions:
Nitride	N3-	Arsenate	AsO43-
Phosphate	PO43-	Arsenite	AsO33-

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