Oxidation Numbers Practice

Front

What is an oxidation number?

Back

An oxidation number is a value that represents the total number of electrons that an atom either gains or loses in a chemical reaction.

Front

What is the oxidation number of Oxygen (O) in most compounds?

Back

-2

Front

What is the oxidation number of Hydrogen (H) when bonded to nonmetals?

Back

+1

Front

What is the oxidation number of Hydrogen (H) when bonded to metals?

Back

-1

Front

What is the oxidation number of a pure element?

Back

0

Front

What is the oxidation number of Fe in Fe(NO3)2?

Back

+3

Front

What is the oxidation number of N in NO3- (nitrate ion)?

Back

+5

Front

What is the oxidation number of Mn in KMnO4?

Back

+7

Front

What is the oxidation number of Fe in FeO?

Back

+2

Front

What is the oxidation number of Cl in NaCl?

Back

-1