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KF combines with HF to form KHF₂. The compound contains the species

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K⁺, F^– and H⁺

K⁺, F^– and HF

K⁺ and [HF₂]^–

[KHF]⁺ and F^–

answer is C.

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Detailed Solution

The fluoride ion, by process of hydrogen bonding, forms the anion ${HF}_{2}^{-}$ .
The compound is written as $K^{+} {[{HF}_{2}]}^{-}$

$K^{+} {[F - H - F]}^{-}$

Hence, the correct option is (C) .

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