Ionic Compounds

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. They typically form between metals and nonmetals.

Front

What is the oxidation number of an element?

Back

The oxidation number (or oxidation state) of an element is a measure of the degree of oxidation of an atom in a substance. It is represented by a positive or negative integer.

Front

How do you determine the oxidation number of oxygen in compounds?

Back

In most compounds, oxygen has an oxidation number of -2, except in peroxides where it is -1.

Front

What is the oxidation number of hydrogen in compounds?

Back

Hydrogen typically has an oxidation number of +1 when bonded to nonmetals and -1 when bonded to metals.

Front

What is the formula for sodium chloride?

Back

The formula for sodium chloride is NaCl.

Front

What is the formula for magnesium oxide?

Back

The formula for magnesium oxide is MgO.

Front

How do you write the formula for ionic compounds?

Back

To write the formula for ionic compounds, combine the symbols of the ions, ensuring that the total positive charge equals the total negative charge.

Front

What do Roman numerals indicate in transition metal compounds?

Back

Roman numerals in transition metal compounds indicate the oxidation number of the metal.

Front

What is the formula for potassium bromide?

Back

The formula for potassium bromide is KBr.

Front

What is the charge of a sulfate ion?

Back

The sulfate ion (SO4) has a charge of -2.