10.32 Which one of the alkaline earth metal carbonates is thermally the most stable ? (a) MgCO3 (b) CaCO3 (c) SrCO3 (d) BaCO3

Answers (1)
R Rakesh

Thermal stability \propto size of the cation in carbonates

increasing order of cationic size in alkaline earth metal is  Mg<Ca<Sr<Ba

Therefore the most thermal stable carbonates are of Barium

Ans. (d) BaCO_{3}

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