How Many Valence Electrons Are in SO3 2-? Explained

Learn how to calculate the valence electrons in the sulfite ion (SO3 2-) with a simple, step-by-step explanation.

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To determine the number of valence electrons in SO3^2-, sum up sulfur’s six valence electrons and oxygen’s 18 (6 per each oxygen atom), plus two additional electrons due to the negative charge. This equals 26 valence electrons in SO3^2-.

FAQs & Answers

  1. What is the total number of valence electrons in SO3 2-? The sulfite ion (SO3 2-) has a total of 26 valence electrons.
  2. How do you calculate the valence electrons in SO3 2-? Add the valence electrons of sulfur (6), oxygen atoms (3 × 6 = 18), and 2 additional electrons for the 2- charge, totaling 26 valence electrons.
  3. Why are extra electrons added for the charge in valence electron calculation? The negative charge indicates extra electrons; for SO3 2-, the 2- charge means adding 2 electrons to the sum of valence electrons from the atoms.

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