The Total solution for NCERT class 6-12
Whichone of the alkaline earth metal carbonates is thermally the most stable?
(a) MgCO3 (b) CaCO3 (c) SrCO3 (d) BaCO3
Thermalstability increases with the increase in the size of the cation present in thecarbonate. The increasing order of the cationic size of the given alkalineearth metals is
Mg< Ca < Sr < Ba
Hence,the increasing order of the thermal stability of the given alkaline earth metalcarbonates is
MgCO3 < CaCO3 < SrCO3 < BaCO3