Question

Thermal stability of alkaline earth metal
carbonates decreases in order
(a) BaCO₃ > SrCO₃ > CaCO₃ > MgCO₃
(b) BaCO₃ > SrCO₃ > MgCO₃ > CaCO₃
(c) CaCO₃ > SrCO₃ > MgCO₃ > BaCO₃
(d) None of these

Answer 1

Explanation:

The thermal stability of alkaline earth metals increases down the group..

This is because, a larger anion like carbonate ion is stabilised by a larger cation..

This opt a is the correct choice