In which case, the order of acidic strength is not correct ?
(a) HI>HBr>HCl (b) HIO4>HBrO4>HCIO4
(c) HClO4>HClO3>HClO2 (d) HF>H2O>NH3
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(b) HIO4>HBrO4>HCIO4⇒ acidic strength has been decided on the basis of
electronnegativity or charge density on central atom.