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H (o-o)
Hydride H-		 He
Li
+		Be
2+
Beryl		 (o-o) Diatomic B
3+, 3-
Borax		C N (o-o)
Nitride
3-		O (o-o)
Oxide
2-		F (o-o)
Fluoride
1- 		Ne
Na
+		Mg
2+
Dolomite 		Al
3+
Bauxite		Si
4+
Quartz		P
Phosphide
3-		S
Sulfide
2-		Cl (o-o)
Chloride
1-		Ar
K
+
Potash		Ca
2+
Limestone		Sc
+++		Ti
4+		V
3+, 4+, 5+		Cr
2+, 3+		Mn
2+, 3+		Fe
2+, 3+
Bog ore		Co
2+, 3+		Ni
2+,3+		Cu
+, 2+
Malachite		Zn
++		Ga
3+		GeAs
3-, 3+, 5+		Se
Selenide
2-		Br (o-o)
Bromide
1-		Kr
Rb
+		Sr
2+		Y
+++		ZrNbMoTcRuRhPdAg
+		Cd
++		In
3+		Sn
2+, 4+
Cassiterite		SbTe
2-, 2+, 4+, 6+		I (o-o)
Iodide
1-		Xe
Cs
+		Ba
2+		 HfTaW ReOsIrPtAu
+, 3+		Hg
2+		TlPb
2+, 4+
Cerussite		Bi
3+		PoAtRn*
Fr*Ra* Rf*Db*Sg*Bh*Hs*Mt*Ds*Rg*Cn*Nh*Fl*Mc*Lv*Ts*Og*
* = Radioactive

-1 Charge
Hydroxide OH-
Nitrite NO2-
Nitrate NO3-
Bicarbonate HCO3-
Acetate C2H3O2-
Hypochlorite ClO-
Chlorite ClO2-
Chlorate ClO3-
Perchlorate ClO4-
Cyanide CN-
Thiocyanate SCN-
Hydrogen sulfate HSO4-
Dihydrogen phosphate H2PO4-
Permanganate MnO4-
Iodate IO3-
 -2 Charge
Carbonate CO32-
Peroxide O22-
Sulfite SO32-
Sulfate SO42-
Thiosulfate S2O32-
Chromate CrO42-
Dichromate Cr2O72-
Oxalate C2O42-
Silicate SiO32-
Hydrogen phosphate HPO42-
 -3 Charge
Borate BO33-
Phosphite PO33-
Phosphate PO43-
Arsenate AsO43-

-4 Charge
Orthosilicate SiO44-
Pyrophosphate P2O74-
 +1 Charge
Ammonium NH4+
Hydronium H3O+

+2 Charge
MercuryI Hg22+
These polyatomic ions are commonly found in various chemical compounds, including salts, acids, and bases.
They play important roles in many chemical reactions, especially in aqueous solutions and in biological systems.