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HCIO4 <HCIO3 <HCIO2 <HCIO
HCIO <HCIO2 <HCIO3 < HCIO4
HCIO2 <HCIO3 <HCIO <HCIO4
HCIO4 <HCIO2 <HCIO3 <HCIO
ANS : 2
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