1.

The decomposition temperature is lowest for

Answer»

`BeCO_(3)`
`MgCO_(3)`
`SrCO_(3)`
`BaCO_(3)`

Solution :`BeCO_(3)` is least stable (LOW decomposition temperature) due to SMALL size of `Be^(+2)` ION which is unstable to stablize biggest `CO_(3)^(2-)` ion.


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