Problem

Problem

The thermal stability of BaCO3\text{BaCO}_3 , CaCO3\text{CaCO}_3 , SrCO3\text{SrCO}_3 and MgCO3\text{MgCO}_3 decreases in the order : a. BaCO3>SrCO3>MgCO3>CaCO3\text{BaCO}_3 > \text{SrCO}_3 > \text{MgCO}_3 > \text{CaCO}_3 b. CaCO3>SrCO3>MgCO3>BaCO3\text{CaCO}_3 > \text{SrCO}_3 > \text{MgCO}_3 > \text{BaCO}_3 c. MgCO3>CaCO3>SrCO3>BaCO3\text{MgCO}_3 > \text{CaCO}_3 > \text{SrCO}_3 > \text{BaCO}_3 d. BaCO3>SrCO3>CaCO3>MgCO3\text{BaCO}_3 > \text{SrCO}_3 > \text{CaCO}_3 > \text{MgCO}_3

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