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How does the thermal stability of oxyacids of chlorine increase with an increase in the oxidation state of chlorine atom ?


The thermal stability of oxy acids of chlorine increase on increasing of oxidation number of chlorine atom because on addition of additional oxygen atoms, the number of (pπ-dπ) π-bonds increase which provide extra stability to the molecules. Oxy acids of chlorine and their number of pπ-dπ bonds given as:

HOCI (0~Pπ-dπ)

HOCIO (1~Pπ-dπ)

HOClO2 (2~Pπ-dπ)

HOCIO3 (3~Pπ-dπ)

Thus the overall stability of oxy acids of chlorine are given as:

                "HClO < HClO2 < HClO3 < HClO4

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