The oxidation state of sulfur in (Sodium tetrathionate) is . The value of is: — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

**Step 1:** Calculation for average O.S.: $2(+1) + 4x + 6(-2) = 0 \Rightarrow 2 + 4x - 12 = 0 \Rightarrow 4x = 10 \Rightarrow x = 2.5$. <br>**Step 2:** Here $x=2$ and $y=5$. <br>**Step 3:** $(x+y) = 2+5 = 7$.