Based on formal charge considerations,the electron-dot structure of CO₃^2- ion has A)two resonance structures involving two single bonds and one double bond. B)two resonance structures involving one single bond and two double bonds. C)three resonance structures involving two single bonds and one double bond. D)three resonance structures involving one single bond and two double bonds.

Question

Quizplus · Accepted Answer

The central atom sulfur has six valence electrons. The oxygens will each have six non-bonding electrons and one bonding electron, the phosphorus will have five non-bonding electrons and two bonding electrons, and the sulfur at the end will have six non-bonding electrons and one bonding electron. Each sulfur will share one of its electrons in a double bond with the central S atom, leaving the other two to form single bonds with oxygens and phosphorus. The formal charge on the central S atom in this structure is zero. However, there are multiple ways to distribute the electrons, resulting in multiple resonance structures. There are three possible resonance structures involving two single bonds and one double bond.

Based on Formal Charge Considerations,the Electron-Dot Structure of CO32- Ion

Based on Formal Charge Considerations,the Electron-Dot Structure of CO₃^2- Ion