$\ce{B < O < Cl < S < S^{-2}}$

$\ce{S < S^{-2} < O < B < Cl}$

$\ce{O < B < Cl < S < S^{-2}}$

$\ce{O < B < S < S^{-2} < Cl}$

$\ce{B < O < S < S^{-2} < Cl}$