Which one of the following on heating will no | vedclass

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(B) Most metal carbonates decompose on heating to give the corresponding metal oxide and $CO_2$ gas. $CaCO_3 \xrightarrow{\Delta} CaO + CO_2$ $PbCO_3

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$Na_2CO_3$

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(B) Most metal carbonates decompose on heating to give the corresponding metal oxide and $CO_2$ gas. $CaCO_3 \xrightarrow{\Delta} CaO + CO_2$ $PbCO_3 \xrightarrow{\Delta} PbO + CO_2$ $Li_2CO_3 \xrightarrow{\Delta} Li_2O + CO_2$ However,alkali metal carbonates (except $Li_2CO_3$) are thermally stable and do not decompose on heating. $Na_2CO_3$ does not decompose on heating because the lattice energy of $Na_2CO_3$ is very high,making it thermally stable.

Which one of the following on heating will not give $CO_2$?

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