Assertion (A) The carbonate of lithium decomposes easily on heating to form lithium oxide and `CO_(2)`. Reason (R) Lithium being very small in size polarises large carbonate ion leading to the formation of more stable `Li_(2)O` and `CO_(2)`.A. Both A and R are correct and R is the correct explanation of AB. Both A and R are correct but R is not the correct explanation of AC. Both A and R are not correctD. A is not correct but R is correct

Assertion (A) The carbonate of lithium decomposes easily on heating to

1.	Assertion (A) The carbonate of lithium decomposes easily on heating to form lithium oxide and `CO_(2)`. Reason (R) Lithium being very small in size polarises large carbonate ion leading to the formation of more stable `Li_(2)O` and `CO_(2)`.A. Both A and R are correct and R is the correct explanation of AB. Both A and R are correct but R is not the correct explanation of AC. Both A and R are not correctD. A is not correct but R is correct
Answer» Correct Answer - A The thermal stability of carbonates increases down the group. Hence `Li_(2)CO_(3)` is least stable. Due to small size of `Li^(+)`, strong polarising power distorts the electron cloud of `CO_(3)^(2-)` ion. High lattice energy of `Li_(2)O` than `Li_(2)CO_(3)` also favours the decomposition of `Li_(2)CO_(3)`.

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