Question

Which of the following is least thermally stable?

• A. $L{i}_{2}C{O}_3$
• B. $N{a}_{2}C{O}_3$
• C. $K_{2}C{O}_3$
• D. $R{b}_{2}C{O}_3$

Answer 1

The correct option is A $L{i}_{2}C{O}_3$

$L{i}_{2}C{O}_3$ is least thermally stable because small sized $L{i}^{+}$ cannot make carbonate lattice.