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To correct the order of stability of gro...

To correct the order of stability of group II A metal carbonates is

A

`MgCO_3 gtCaCO_3gtSrCO_3gtBaCO_3`

B

`BaCO_3 gtSrCO_3gtCaCO_3gtMgCO_3`

C

`SrCO_3gtBaCO_3gtCaCO_3gtMgCO_3`

D

`CaCO_3gtMgCO_3gtBaCO_3gtSrCO_3`

Text Solution

Verified by Experts

The correct Answer is:
B
`Mg^(2+)` is smallest in size hence , show high polarising power. Thus , `MgCO_3` is most covalent and least stable. Stability increases on moving down the group.
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