Honors Chemistry Ion Formula Chart

Vocabulary flashcards covering common polyatomic and monatomic ions, their chemical formulas, charges, and corresponding Roman numeral oxidation states from the Honors Chemistry Ion Formula Chart.

Ammonium ion

A polyatomic cation with the formula $NH_4^+$ and a charge of $1+$.

Silver ion

A transition metal cation with the formula $Ag^+$ and a constant charge of $1+$.

Zinc ion

A transition metal cation with the formula $Zn^{2+}$ and a constant charge of $2+$.

Acetate ion

A polyatomic anion with the formula $C_2H_3O_2^-$ and a charge of $1-$.

Chlorate ion

A polyatomic anion with the formula $ClO_3^-$ and a charge of $1-$.

Chlorite ion

A polyatomic anion with the formula $ClO_2^-$ and a charge of $1-$.

Cyanide ion

A polyatomic anion with the formula $CN^-$ and a charge of $1-$.

Dihydrogen phosphate ion

A polyatomic anion with the formula $H_2PO_4^-$ and a charge of $1-$.

Hydrogen carbonate ion (Bicarbonate)

A polyatomic anion with the formula $HCO_3^-$ and a charge of $1-$.

Hydrogen sulfate ion (Bisulfate)

A polyatomic anion with the formula $HSO_4^-$ and a charge of $1-$.

Hydroxide ion

A polyatomic anion with the formula $OH^-$ and a charge of $1-$.

Nitrate ion

A polyatomic anion with the formula $NO_3^-$ and a charge of $1-$.

Nitrite ion

A polyatomic anion with the formula $NO_2^-$ and a charge of $1-$.

Permanganate ion

A polyatomic anion with the formula $MnO_4^-$ and a charge of $1-$.

Carbonate ion

A polyatomic anion with the formula $CO_3^{2-}$ and a charge of $2-$.

Chromate ion

A polyatomic anion with the formula $CrO_4^{2-}$ and a charge of $2-$.

Dichromate ion

A polyatomic anion with the formula $Cr_2O_7^{2-}$ and a charge of $2-$.

Hydrogen phosphate ion

A polyatomic anion with the formula $HPO_4^{2-}$ and a charge of $2-$.

Oxalate ion

A polyatomic anion with the formula $C_2O_4^{2-}$ and a charge of $2-$.

Peroxide ion

A polyatomic anion with the formula $O_2^{2-}$ and a charge of $2-$.

Silicate ion

A polyatomic anion with the formula $SiO_3^{2-}$ and a charge of $2-$.

Sulfate ion

A polyatomic anion with the formula $SO_4^{2-}$ and a charge of $2-$.

Sulfite ion

A polyatomic anion with the formula $SO_3^{2-}$ and a charge of $2-$.

Tartrate ion

A polyatomic anion with the formula $C_4H_4O_6^{2-}$ and a charge of $2-$.

Thiosulfate ion

A polyatomic anion with the formula $S_2O_3^{2-}$ and a charge of $2-$.

Borate ion

A polyatomic anion with the formula $BO_3^{3-}$ and a charge of $3-$.

Phosphate ion

A polyatomic anion with the formula $PO_4^{3-}$ and a charge of $3-$.

Phosphite ion

A polyatomic anion with the formula $PO_3^{3-}$ and a charge of $3-$.

Roman Numeral (I)

Indicates a charge of $1+$ on a transition metal cation in chemical nomenclature.

Roman Numeral (II)

Indicates a charge of $2+$ on a transition metal cation in chemical nomenclature.

Roman Numeral (III)

Indicates a charge of $3+$ on a transition metal cation in chemical nomenclature.

Roman Numeral (IV)

Indicates a charge of $4+$ on a transition metal cation in chemical nomenclature.