Zn(OH)2 is dissolved in both NH4OH and NaOH solution. — d and f Block Elements Chemistry Question

💡 Solution & Explanation

Step 1: 'Vitriols' are a family of hydrated sulfate salts of transition metals. Step 2: White vitriol is specifically the heptahydrate form of zinc sulfate. Step 3: Its chemical formula is ZnSO4 . 7H2O, which corresponds to option (c).