s-Block ElementsHard

Question

Which of the following metal carbonate is/are thermally stable ?

Options

A.Na₂CO₃

B.MgCO₃

C.K₂CO₃

D.Rb₂CO₃

Solution

MgCO₃ → MgO + CO₂
Alkali metal carbonates except Li₂CO₃ are thermally stable.

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