Write the balanced chemical equations for the following process:
(i) XeF2 undergoes hydrolysis.
(ii) MnO2 is heated with concentrated HCl.
OR
Arrange the following in order of property indicated for each set:
(i) H2O,H2S,H2‌Se,H2‌Te - increasing acidic character.
(ii) HF,HCl,HBr,HI - decreasing bond enthalpy