Chemical Nomenclature and Common Polyatomic and Monoatomic Ions

Vocabulary practice flashcards covering names, chemical formulas, and charges of common monoatomic and polyatomic ions, along with systematic chemical nomenclature from tutorial practice problems.

Mercury(I)

A polyatomic cation with the chemical formula $\text{Hg}_2^{2+}$.

Ammonium

A polyatomic cation with the chemical formula $\text{NH}_4^+$.

Nitrate

A polyatomic oxyanion with the chemical formula $\text{NO}_3^-$.

Nitrite

A polyatomic oxyanion with the chemical formula $\text{NO}_2^-$.

Sulfate

A polyatomic oxyanion with the chemical formula $\text{SO}_4^{2-}$.

Sulfite

A polyatomic oxyanion with the chemical formula $\text{SO}_3^{2-}$.

Hydrogen sulfate

A polyatomic anion with the chemical formula $\text{HSO}_4^-$, commonly known as bisulfate.

Hydroxide

A polyatomic anion with the chemical formula $\text{OH}^-$.

Cyanide

A polyatomic anion with the chemical formula $\text{CN}^-$.

Carbonate

A polyatomic oxyanion with the chemical formula $\text{CO}_3^{2-}$.

Hydrogen carbonate

A polyatomic anion with the chemical formula $\text{HCO}_3^-$, widely known by the common name bicarbonate.

Thiocyanate

A polyatomic anion with the chemical formula $\text{NCS}^-$ or $\text{SCN}^-$ (also written as $\text{NSC}^-$).

Peroxide

A diatomic oxygen anion with the chemical formula $\text{O}_2^{2-}$.

Phosphate

A polyatomic oxyanion with the chemical formula $\text{PO}_4^{3-}$.

Hydrogen phosphate

A polyatomic anion with the chemical formula $\text{HPO}_4^{2-}$.

Dihydrogen phosphate

A polyatomic anion with the chemical formula $\text{H}_2\text{PO}_4^-$.

Permanganate

A polyatomic oxyanion with the chemical formula $\text{MnO}_4^-$, also referred to as manganate.

Chromate

A polyatomic oxyanion with the chemical formula $\text{CrO}_4^{2-}$.

Dichromate

A polyatomic oxyanion with the chemical formula $\text{Cr}_2\text{O}_7^{2-}$.

Hypochlorite

A chlorine oxyanion with the chemical formula $\text{ClO}^-$ or $\text{OCl}^-$.

Chlorite

A chlorine oxyanion with the chemical formula $\text{ClO}_2^-$.

Chlorate

A chlorine oxyanion with the chemical formula $\text{ClO}_3^-$.

Perchlorate

A chlorine oxyanion with the chemical formula $\text{ClO}_4^-$.

Hypobromite

A bromine oxyanion with the chemical formula $\text{BrO}^-$.

Bromite

A bromine oxyanion with the chemical formula $\text{BrO}_2^-$.

Bromate

A bromine oxyanion with the chemical formula $\text{BrO}_3^-$.

Perbromate

A bromine oxyanion with the chemical formula $\text{BrO}_4^-$.

Hypoiodite

An iodine oxyanion with the chemical formula $\text{IO}^-$.

Iodite

An iodine oxyanion with the chemical formula $\text{IO}_2^-$.

Iodate

An iodine oxyanion with the chemical formula $\text{IO}_3^-$.

Periodate

An iodine oxyanion with the chemical formula $\text{IO}_4^-$.

Acetate

A polyatomic anion with the chemical formula $\text{C}_2\text{H}_3\text{O}_2^-$.

Oxalate

A polyatomic dicarboxylate anion with the chemical formula $\text{C}_2\text{O}_4^{2-}$.

Thiosulfate

A polyatomic oxyanion of sulfur with the chemical formula $\text{S}_2\text{O}_3^{2-}$.

Cyanate

A polyatomic anion with the chemical formula $\text{OCN}^-$.

Borate

A polyatomic oxyanion with the chemical formula $\text{BO}_3^{3-}$.

Silicate

A polyatomic silicon oxyanion with the chemical formula $\text{SiO}_3^{2-}$.

Arsenate

A polyatomic arsenic oxyanion with the chemical formula $\text{AsO}_4^{3-}$.

Amide

An inorganic nitrogen anion with the chemical formula $\text{NH}_2^-$.

Azide

A linear polyatomic nitrogen anion with the chemical formula $\text{N}_3^-$.

Hydride

A monoatomic anion of hydrogen with the chemical formula $\text{H}^-$.

Nitride

A monoatomic anion of nitrogen with the chemical formula $\text{N}^{3-}$.

Phosphide

A monoatomic anion of phosphorus with the chemical formula $\text{P}^{3-}$.

Arsenide

A monoatomic anion of arsenic with the chemical formula $\text{As}^{3-}$.

Silicide

A monoatomic anion of silicon with the chemical formula $\text{Si}^{4-}$.

Selenide

A monoatomic anion of selenium with the chemical formula $\text{Se}^{2-}$.

$$\text{Cr(ClO)}_3$$

Chromium(III) hypochlorite, an ionic compound composed of chromium(III) cations and hypochlorite anions.

$$\text{Na}_2\text{O}_2$$

Sodium peroxide, an ionic compound composed of sodium cations and the peroxide anion ($\text{O}_2^{2-}$).

$$\text{Sr(HSO}_4)_2$$

Strontium hydrogen sulfate (or strontium bisulfate), consisting of strontium cations and hydrogen sulfate anions.

$$\text{Cu}_2\text{SO}_3$$

Copper(I) sulfite, an ionic compound composed of copper(I) cations and sulfite anions.

$$\text{MgCl}_2 \cdot 6\text{H}_2\text{O}$$

Magnesium chloride hexahydrate, a hydrated salt consisting of magnesium chloride and six waters of crystallization.

$$\text{Pb(CrO}_4)_2$$

Lead(IV) chromate, an ionic compound consisting of lead(IV) cations and chromate anions.

$$\text{Ba(ClO}_3)_2$$

Barium chlorate, an inorganic ionic compound composed of barium cations and chlorate anions.

$$\text{Sn}_3(\text{PO}_4)_2$$

Tin(II) phosphate, an ionic compound composed of tin(II) cations and phosphate anions.

$$\text{Ni(IO}_3)_2$$

Nickel(II) iodate, an ionic compound consisting of nickel(II) cations and iodate anions.

Ammonium dichromate

An inorganic salt with the chemical formula $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$, composed of ammonium cations and dichromate anions.

Sulfur hexafluoride

An inorganic binary covalent compound composed of one sulfur atom bonded to six fluorine atoms, with the formula $\text{SF}_6$.

Manganese(IV) oxide

An inorganic transition metal compound with the chemical formula $\text{MnO}_2$, containing manganese in the $+4$ oxidation state.