Wiktionary
hydrogen halide
n. (context inorganic chemistry English) Any binary compound of hydrogen and a halide
Wikipedia
Hydrogen halide
Hydrogen halides (or hydrohalic acids) are inorganic compounds with the formula HX where X is one of the halogens: fluorine, chlorine, bromine, iodine, astatine, and possibly ununseptium. Hydrogen halides are gases that dissolve in water to give acids.
Compound
Chemical formula
Bond length
d(H−X) / pm
(gas phase)
model
Dipole
μ / D
Aqueous phase (acid)
hydrogen fluoride
fluorane
HF
1.86
hydrogen chloride
chlorane
HCl
1.11
hydrogen bromide
bromane
HBr
0.788
hydrogen iodide
iodane
HI
0.382
hydrogen astatide
astatane
astatine hydride
HAt
−0.06
hydroastatic acid