Question Video: Naming Molecular Compound of Chlorine Dioxide Chemistry

What would the name of a compound containing one atom of chlorine and two atoms of oxygen be?

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Video Transcript

What would the name of a compound containing one atom of chlorine and two atoms of oxygen be?

In this question, we need to name a compound that contains chlorine and oxygen. Chlorine and oxygen are both nonmetals found on the right-hand side of the periodic table, which means that the compound that they form will be a molecular compound. When we name molecular compounds, we name the less electronegative element first. Then, we’ll name the more electronegative element with the suffix -ide. Finally, we’ll use these Greek numerical prefixes to indicate the number of atoms that we have in a compound.

Chlorine is less electronegative than oxygen, so we’ll name it first, followed by oxygen. But we’ll have to replace the end of its name with the suffix -ide. Finally, we’ll use Greek prefixes to indicate the number of atoms. We have one atom of chlorine, which corresponds to mono-, and two atoms of oxygen. But by convention, we drop the prefix if there’s only one of the first element. So, we would drop the mono-, leaving us with chlorine dioxide.

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