The correct order of acidic strength is

Options

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

Answer

A

Explanation

HFlt HCl ltHBr ltHI
As we go down the group bond energy decreases hence, acidic nature increases.