13.6k views
3 votes
Which of the following is composed of ions?
a.)CO2
b.)C
c.)Zn
d.)Fe2O3

1 Answer

1 vote
The answer is d.) Fe302.  CO2 is a compound (One carbon atom, two oxygen atoms), letters b. and c. are elements (Carbon and zinc, respectively).
User William Seemann
by
8.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.