• # question_answer $KH{{F}_{2}}$ exists while $KHC{{l}_{2}}$ does not. Explain.

Answer:

$HF$ molecules are hydrogen bonded as$H-F....H-F...H-F....$  Therefore, they can associate to form $H{{F}_{2}}^{-}$ anion which can exist in combination with ${{K}^{+}}$ ion as $KH{{F}_{2}}$. But no hydrogen bonding is present in $H-Cl$ molecules. Therefore the anion $HCl_{2}^{-}$ and$KHC{{l}_{2}}$  do not exist.

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