Inorganic

Q2. I₂+I^- --> I₃^-

This is why iodine becomes soluble in water when iodide ions are added

Q3. AlCl₃ exists as a covalent dimer

AlF₃ is ionic because the anion is smaller and has more charge density, so it is least polarizable hence ionic

While Cl is comparatively larger, and hence more polarizable than F so AlCl₃ is less ionic (it is covalent)

Thank You
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