What is the actual structural oxidation state of the two central sulphur atoms found within the tetr — Redox Reactions and Volumetric Analysis Chemistry Question
Question
What is the actual structural oxidation state of the two central sulphur atoms found within the tetrathionate ion ( $S_4O_6^{2-}$ )?
Answer: C
💡 Solution & Explanation
In the tetrathionate ion, the structure is $^-O_3S-S-S-SO_3^-$ . The terminal sulphur atoms are bonded to highly electronegative oxygens and have an actual oxidation state of +5. The central sulphur atoms are bonded only to other identical sulphurs, having an actual oxidation state of 0.
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