What does the prefix "di" in dioxide represent?

The prefix "di" in dioxide represents two.

Explanation:

It is a prefix used to name chemical compounds having two of the same chemical group in one molecule.

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iron and sleel

make siroeel

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.