Finding Oxidation Numbers

Front

What is an oxidation number?

Back

An oxidation number is a value assigned to an element in a compound that represents the number of electrons lost or gained by that element during a chemical reaction.

Front

What is the oxidation number of chlorine in KCl?

Back

-1

Front

Back

+6

Front

In which substance does carbon have the highest oxidation number?

Back

Front

Which change in oxidation numbers shows the greatest gain in electrons?

Back

+5 to -3

Front

Back

0 to -2

Front

What is the oxidation number of hydrogen in most compounds?

Back

+1

Front

What is the oxidation number of oxygen in most compounds?

Back

-2

Front

What is the oxidation number of alkali metals in compounds?

Back

+1

Front

What is the oxidation number of alkaline earth metals in compounds?

Back

+2