PYQ NEET- The F And D Block Elements L-10

Question: $\mathrm{HgCl}_2$ and $\mathrm{I}_2$ both when dissolved in water containing $\mathrm{I}^{-}$ions, the pair of species formed is#

A) $\mathrm{Hgl}_2, \mathrm{I}^{-}$

B) $\mathrm{Hgl}_4^{2-}, \mathrm{I}_3^{-}$

C) $\mathrm{Hg}_2 \mathrm{I}_2, \mathrm{I}^{-}$

D) $\mathrm{Hgl}_2, \mathrm{I}_3^{-}$

Answer: $\mathrm{Hgl}_4^{2-}, \mathrm{I}_3^{-}$#