MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistrys- Block 3.0Previous Year Questions
Correct order of stability of group IIA metal carbonates is (OJEE 2009)
A.MgCO₃ > CaCO₃ > SrCO₃ > BaCO₃
B.BaCO₃ > SrCO₃ > CaCO₃ > MgCO₃✓ Correct
C.SrCO₃ > BaCO₃ > CaCO₃ > MgCO₃
D.CaCO₃ > MgCO₃ > BaCO₃ > SrCO₃
Explanation
The stability of alkaline earth metal carbonates depends on the reactivity of metal and size of the cation. As the size of the cation increases the stability of metal carbonate increases down the group. And the order as follows
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