• # question_answer $KF$ combines with $HF$ to form $KH{{F}_{2}}$. The compound contains the species [IIT 1996] A) ${{K}^{+}},$ ${{F}^{-}}$ and ${{H}^{+}}$ B) ${{K}^{+}},$ ${{F}^{-}}$ and $HF$ C) ${{K}^{+}}$ and ${{\left[ H{{F}_{2}} \right]}^{-}}$ D) ${{\left[ KHF \right]}^{+}}$ and ${{F}^{-}}$

$KF+HF\,\to \,KH{{F}_{2}}$⇌${{K}^{+}}+HF_{2}^{-}$