The correct sequence of thermal stability of | vedclass

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Question

(A) The thermal stability of alkaline earth metal carbonates increases as the size of the cation increases down the group.As the size of the cation in

Vedclass · Accepted Answer

$MgCO_3 < CaCO_3 < SrCO_3 < BaCO_3$

Vedclass · Answer

(A) The thermal stability of alkaline earth metal carbonates increases as the size of the cation increases down the group.As the size of the cation increases,the polarizing power of the cation decreases,which makes the $M-O$ bond stronger and the carbonate ion more stable.Therefore,the order of thermal stability is $MgCO_3 < CaCO_3 < SrCO_3 < BaCO_3$.

The correct sequence of thermal stability of the following carbonates is:

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