Which one of the following is the correct order for the decomposition temperature of $\mathrm{CaCO}_{3}(\mathrm{X}), \mathrm{MgCO}_{3}(\mathrm{Y})$ and $\mathrm{BaCO}_{3}(\mathrm{Z})$

Question

Aicharya · Accepted Answer

The decomposition temperature of carbonates of $\mathrm{Ca}, \mathrm{Mg}$ and Ba follow the following order.
$\begin{array}{l}
\mathrm{BaCO}_{3}>\mathrm{CaCO}_{3}>\mathrm{MgCO}_{3} \\
(1633 \mathrm{~K})(1173 \mathrm{~K})(813 \mathrm{~K}) \\
\mathrm{Z}>\mathrm{X}>\mathrm{Y}
\end{array}$
It is due to high crystal lattice energy \& hence high stability

Which one of the following is the correct order for the decomposition temperature of…

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