Question

write the oxacids of chlorine in increasing of their acidic character

Answer 1

The strength of the oxy-acids of chlorine increases in the order HClO < HClO2 < HClO3 < HClO4.
Perchloric acid, HClO4, is supposed to be the strongest of all known simple acids.
For the oxy-acids of any non-metal, higher the oxidation number stronger will be the acid. The oxidation states of chlorine in HClO, HClO2, HClO3 and HClO4 respectively are +1, +3, +5, and +7.

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