Question

Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally? (a) MgC03 (b)CaC03 (c)SrCQ3 (d)BaC03​

Answer 1

Explanation:

Sol: (d) Thermal stability of metal carbonates increases as the electropositive character of the metal or the basicity of the metal hydroxide increases from Be(OH)2 to Ba(OH)2. Thus, BaC03 is the most stable.