obsidianvault/polyatomic ions.md

chemistry

**"a charged chemical species composed of two or more atoms covalently bonded or of a metal complex, that can be considered to be acting as a single unit"

Name	Formula
Polyatomic ions (carrying negative charge)
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Hydroxide	OH–
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Acetate	CH3COO–
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Cyanide	CN–
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Chlorate	ClO3–
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Chlorite	ClO2–
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Nitrate	NO3–
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Nitrite	NO2–
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Hypochlorite	OCl–
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Hypobromite	OBr –
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Iodate	IO3–
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Bisulphite	HSO3–
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Bisulphate	HSO4–
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Permanganate	MnO4–
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Thiocyanate	SCN–
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Hydrogen carbonate	HCO3–
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Carbonate	CO32-
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Sulphate	SO42-
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Sulphite	SO32-
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Oxalate	C2O42-
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Silicate	SiO32-
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Manganate	MnO42-
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Thiosulphate	S2O32-
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Chromate	CrO42-
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Dichromate	Cr2O72-
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Phosphate	PO43-
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Phosphite	PO33-
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Aluminate	AlO33-
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Arsenite	AsO33-
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Arsenate	AsO43-
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Borate	BO33-
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Pyrophosphate	P2O74-
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Polyatomic ions (carrying positive charge)
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Ammonium	NH4+
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List of monatomic ions

• The ions made of a single atom are called simple ions or monatomic ions.

Name	Formula
Monatomic ions (carrying positive charge)
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Hydrogen	H+
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Potassium	K+
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Sodium	Na+
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Silver	Ag+
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Cuprous	Cu+
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Aurous	Au+
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Barium	Ba2+
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Calcium	Ca2+
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Magnesium	Mg2+
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Cupric	Cu2+
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Ferrous	Fe2+
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Stannous	Sn2+
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Mercuric	Hg2+
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Zinc	Zn2+
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Plumbous	Pb2+
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Aluminum	Al3+
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Ferric	Fe3+
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Auric	Au3+
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Arseneous	As3+
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Plumbic	Pb4+
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Stannic	Sn4+
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Monatomic ions (carrying negative charge)
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Chloride	Cl–
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Bromide	Br –
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Iodide	I–
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Oxide	O2-
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Sulphide	S2-
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Nitride	N3-
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Phosphide	P3-
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