Account for the following:
(i) Ozone is thermodynamically unstable.
(ii) Solid PCl5 is ionic in nature.
(iii) Fluorine forms only one oxoacid HOF.
(b) Draw the structure of
(i) BrF5
(ii) XeF4
OR
(i) Compare the oxidising action of F2 and Cl2 by considering parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy.
(ii) Write the conditions to maximize the yield of H2SO4 by contact process.
(iii) Arrange the following in the increasing order of property mentioned :
(a) H3PO3,‌‌H3PO4,‌‌H3PO2‌‌ (Reducing character).
(b) NH3,‌‌PH3,‌‌AsH3,‌‌SbH3,‌‌BiH3 (Base strength).