A xenon compound 'A' upon partial hydrolysis gives XeO₂F₂. The number of lone pair of electrons present in compound A is _________. (Round off to the Nearest Integer)

The reaction of white phosphorus on boiling with alkali in inert atmosphere resulted in the formation of product 'A'. The reaction of 1 mol of 'A' with excess of AgNO₃ in aqueous medium gives ___________ mol(s) of Ag. (Round off to the Nearest Integer).

Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is _________.

(A) $$\alpha$$-sulphur

(B) $$\beta$$-sulphur

(C) S₂-form

The reaction of sulphur in alkaline medium is given below:


The values of 'a' is _______. (Integer answer)