A) \[MgC{{O}_{3}}\]
B) \[N{{a}_{2}}C{{O}_{3}}\]
C) \[{{K}_{2}}C{{O}_{3}}\]
D) \[R{{b}_{2}}C{{O}_{3}}\]
Correct Answer: A
Solution :
\[MgC{{O}_{3}}\xrightarrow{\text{Heat}}MgO+C{{O}_{2}}\] The metal whose oxide is stable, it's carbonate is unstable
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