How many of the following anions do not exist as hydrated ions in water

$O^{2-},O_2^{2-},O_2^{-},N^{3-},C_2^{2-},C_3^{4-},F^{-},C{l}^{-},O{H}^{-},S{O}_4^{-2},N{O}_3^{-}$

$O^{2-},O_2^{2-},O_2^{-},O_3^{-}$  ions hydrolyse in water liberating oxygen converting into hydroxide ions  $N^{3-}$ gives $N{H}_3,C_2^{2-}$  gives  $C_2{H}_2,C_3^{4-}$ gives propyne by reacing with water.  $F^{-},C{l}^{-},O{H}^{-},S{O}_4^{2-}\text{\hspace{0.17em}and }N{O}_3^{-}$  ions exists in water as hydrated ions