Question

A formula unit of the ionic compound copper(II) carbonate consists of ________ copper(II) ions and ________ carbonate ions.

a. one; one
b. one; two
c. some other combination of ions
d. two; two
e. two; one

Answer 1

The formula unit of copper(II) carbonate consists of two copper(II) ions and one carbonate ion.

Step-by-step explanation:

The formula unit of the ionic compound copper(II) carbonate consists of two copper(II) ions and one carbonate ion. So, the correct answer is e. two; one.