The correct order of the thermal stability of hydrogen halides (H-X) is

Options

A. `HI gt HBr gt HCI gt HF`
B. `HF gt HCI gt HBr gt HI`
C. `HCI lt HF gt HBr lt HI`
D. `HI gt HCI lt HF gt HBr`

Answer

B

Explanation

Thermal stability `prop` bond dissociation energy. Bond dissociation energy of HF is the highest and HI is the least. So, HF is the most stable halogen acid while HI is the least stable.