Which anion is stable towards water?

CHEMISTRY · Single correct · CBSE · Chemistry · Chemical Bonding and Molecular Structure · Chemical Bonding and Molecular Structure

Problem

Which anion is stable towards water? (1)

\mathrm{O^{2-}}

(2)

\mathrm{O_2^{2-}}

(3)

\mathrm{O_2^-}

(4) None of these