Chemistry - Solid State Question with Solution | TestHub

A non-stoichiometric compound $M_7{S}_8$ consists of metal in both $M^{2+}$ and $M^{3+}$ forms and Sulphur is present at supplied ions, then find the value of $30x+25y$ ? Where, $x=$ the $\%$ age of cation vacancies relative to $M^{2+}$ ions present initially (as ideal crystal of $MS$ ) $y=$ The valency factor $M_7{S}_8$ when it is oxidized into $M^{3+}$ and $S{O}_4^{2-}$ ion.