The oxides of alkali and alkali earth metals are basic and the their strenght increases down the group. The solubility of carbonates and sulphates of alkali and earth metals shown opposite trends. Only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkali earth metals on heating give carbonates indentify the correct order of thermal stablities

The oxides of alkali and alkali earth metals are basic and the their s

1.	The oxides of alkali and alkali earth metals are basic and the their strenght increases down the group. The solubility of carbonates and sulphates of alkali and earth metals shown opposite trends. Only the carbonates of Li and alkaline earth metals decompose on heating. The bicarbonates of both alkali and alkali earth metals on heating give carbonates indentify the correct order of thermal stablities
Answer» `K_(2)OltMgCO_(3)ltCaCO_(3)gtBeCO_(3)` `BeCO_(3)ltCaCO_(3)ltMgCO_(3)ltK_(2)CO_(3)` `BeCO_(3)ltMgCO_(3)ltCaCO_(3)ltK_(2)CO_(3)` `CaCO_(3)ltBeCO_(3)ltMgCO_(3)ltK_(2)CO_(3)` SOLUTION :The thermal stability of cabonates of IIA GROUP elements increases from Be to Ba. Which can be EXPLAINED on the basis of stability of oxide formed when they decomposed