KF combines with HF to form KHF 2 . This compound contains the species

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$\mathrm{KF}$ combines with $\mathrm{HF}$ to form $\mathrm{KHF}_2$. This compound contains the species

ChemistryCoordination CompoundsAIIMSAIIMS 2009

Options:

A $\mathrm{K}^{+}, \mathrm{F}^{-}$and $\mathrm{H}^{+}$
B $\mathrm{K}^{+}, \mathrm{F}^{-}$and $\mathrm{HF}$
C $\mathrm{K}^{+}$and $\left[\mathrm{HF}_2\right]^{-}$
D $[\mathrm{KHF}]^{+}$and $\mathrm{F}_2$

Solution:

1284 Upvotes Verified Answer

The correct answer is: $\mathrm{K}^{+}$and $\left[\mathrm{HF}_2\right]^{-}$

The fluoride ion, by a process of hydrogen bonding, forms the anion, $\mathrm{HF}_2^{-}$. The compound is written as $\mathrm{K}^{+}\left[\mathrm{HF}_2\right]^{-}$.

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