Which of the following will give maximum ions in solution ?

Which of the following will give maximum NO. of ions in water?

Which of the following ions give coloured aqueous solution?

Which among the following compound will give maximum enol content in solution :

Which among the following compounds will give maximum enol content in solution?

Some platinum (IV) complexes were studied by Werner. Which of the following yields maximum number of ions in aqueous solution ?

Which of the following gives the maximum number of ions per mole when dissolved in water ?