Polyatomic Ionic Compounds

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged ion composed of two or more atoms covalently bonded, which can act as a single unit in chemical reactions.

Front

What is the formula for ammonium phosphate?

Back

(NH₄)₃PO₄

Front

What is the name of the compound Cu₂CO₃?

Back

Copper carbonate

Front

What is the proper formula for magnesium hydroxide?

Back

Mg(OH)₂

Front

What is the formula for magnesium cyanide?

Back

Mg(CN)₂

Front

What is the name of the ionic compound MgSO₄?

Back

Magnesium sulfate

Front

How do you determine the charge of a polyatomic ion?

Back

The charge of a polyatomic ion is determined by the total number of electrons lost or gained by the atoms in the ion.

Front

What is the significance of parentheses in chemical formulas?

Back

Parentheses indicate that the enclosed group of atoms is a polyatomic ion and that the subscript outside the parentheses applies to the entire group.

Front

What is the difference between ionic and covalent compounds?

Back

Ionic compounds are formed by the transfer of electrons between metals and nonmetals, while covalent compounds are formed by the sharing of electrons between nonmetals.

Front

What is the formula for sodium sulfate?

Back

Na₂SO₄