Which of the following metal carbonates undergo thermal decomposition upon heating to give the corre — s Block Elements Chemistry Question

💡 Solution & Explanation

All alkaline earth metal carbonates (like $CaCO_3$) decompose on heating to yield metal oxide and $CO_2$. Among alkali metal carbonates, only Lithium carbonate ($Li_2CO_3$) exhibits this anomalous behavior and decomposes. The carbonates of $Na$, $K$, $Rb$, and $Cs$ are highly stable to heat and melt without decomposing.