(a) Account for the following :

(i) Tendency to show -2 oxidation state decreases from oxygen to tellurium.

(ii) Acidic character increases from HF to HI.

(iii) Moist SO_{2} gas acts as a reducing agent.

(b) Draw the structure of an oxoacid of sulphur containingS-O-S linkage.

(c) Complete the following equation :

        XeF_{2}+H_{2}O\rightarrow

 

 
 
 
 
 

Answers (1)
S safeer

(a)

(i) Tendency to show -2 oxidation state decreases from oxygen to tellurium because of decrease in electronegativity .

(ii) Acidic character increases from HF to HI

(iii) Moist SO_{2} gas acts as a reducing agent because of decrease in bond dissociation enthalpy from HF to HI.

(b) 

(c) 2XeF2 + 2H2\rightarrow 2Xe + 4HF + O2      

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