Discussion
Among the following the maximum covalent character is shown by the compound
Answer: D
LiCl shows the greatest covalent character.
By Fajans' rules, covalent character increases when the cation is small and highly charged and the anion large and easily polarised. \(\mathrm{Li^+}\) is the smallest of these cations, so it distorts the chloride ion most strongly. This is why LiCl dissolves in organic solvents such as ethanol and acetone, while CsCl does not.
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