(a) Write the balanced chemical equations for obtaining $Xe{O}_{3}$ and $XeO{F}_{4}$ from $Xe{F}_{6}.$

(b) Account for the following :

(i) ${H}_{2}S$ is less acidic than ${H}_{2}Te$.

(ii)${H}_{3}P{O}_{2}$ has reducing nature.

(iii) $S{O}_{2}$ is an air pollutant.

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#8 | 18th Group

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group 18,perparation and properties