Which one forms `KHX_(2)` type compound ?

Options

A. HF
B. HCl
C. HI
D. HBr

Answer

A

Explanation

Hydrogen fluoride is an associated molecules and can be represented by `H_(2)F_(2)` . This is due to the fact that strong Hydrogen bonding exist between the molecules . (as F is highly electronegative element) `H_(2)F_(2)+ KF to KHF_(2) + HF`