In which case the order of acidic strength is not correct ?

1.	In which case the order of acidic strength is not correct ?
Answer» `HI gt HBr gt HCl` `HIO_(4) gt HBrO_(4) gt HClO_(4)` `HClO_(4) gt HClO_(3) gt HClO_(2)` `HF gt H_(2) O gt NH_(3)` Solution :As the electronegativity of central atom increases, acidic strength of oxo-acids increases. HENCE, correct order is : `HClO_(4)gtHBrO_(4)gtHIO_(4)`

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