Question

which of the following is an example of a chemical name using prefixes?
a. iron(ii) carbonate
b. potassium chloride
c. magnesium sulfate
d. carbon dioxide

Explanation:

Prefixes in chemical names indicate the number of atoms of an element in a compound. In "carbon dioxide", "di -" is a prefix meaning two, indicating two oxygen atoms bonded to one carbon atom. The other options do not use prefixes to denote atom - counts.

Answer:

D. Carbon dioxide