Chemistry Question from JEE Main 2026 · 24 January, Shift 1

X and Y are the number of electrons involved, respectively during the oxidation of $\mathrm{I^-}$ to $\mathrm{I_2}$ and $\mathrm{S^{2-}}$ to $\mathrm{S}$ by acidified $\mathrm{K_2Cr_2O_7}$. The value of $X + Y$ is _____.