question_answer 1)

  Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally? (a) \[MgC{{O}_{3}}\]                      (b) \[CaC{{O}_{3}}\]                        (c) \[SrC{{O}_{3}}\]                         (d) \[BeC{{O}_{3}}\]

Answer:

  (d) The thermal stability of the carbonates of alkaline earth metals increases from Be to Ba. Ba has the lowest polarisation power.