What Is the Valency of Oxygen in SO2 and SO3 Explained

Discover the valency of oxygen in SO2 and SO3 and how oxygen atoms bond with sulfur in these compounds.

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Oxygen typically has a valency of 2. In both SO2 (sulfur dioxide) and SO3 (sulfur trioxide), oxygen maintains this valency. This means each oxygen atom forms two bonds with sulfur.

FAQs & Answers

  1. What is the valency of oxygen in SO2? In SO2, oxygen has a valency of 2, meaning each oxygen atom forms two bonds with the sulfur atom.
  2. Does oxygen’s valency change in SO3 compared to SO2? No, oxygen maintains a valency of 2 in both SO3 and SO2 compounds.
  3. Why does oxygen have a valency of 2 in these compounds? Oxygen typically forms two bonds because it has six valence electrons and needs two more to complete its octet.

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To deepen your understanding of chemical valency and bonding, check out our related videos on the valency of sulfur, the Lewis structures of SO2 and SO3, and general principles of chemical valency in compounds.

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