` KF` combines with to form `KHF_2`. The compound contains the species :

Options

A. `K^(+),F^(-)` and `H^(+)`
B. `K^(+), F^(-)` and HF
C. `K^(+) and [HF_2]^-`
D. `[KHF]^(+) and F_2`

Answer

C

Explanation

`F^(-)` forms H-bond with HF, therefore, the species (C) is correct. `[H.......F-H]^(-)` or `HF_2^(-)` exists and hence option (C ) is correct.