\textbf{105- Which comparison of ionic radii given below is correct?} (1) $S^{2-} > Cl^- > K^+ > Ca^{2+}$ \hfill (2) $Br^- > Cl^- > Mg^{2+} > K^+$ (3) $Al^{3+} > Mg^{2+} > Cl^- > S^{2-}$ \hfill (4) $K^+ > Mg^{2+} > O^{2-} > F^-$