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  • 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_2O and CO-2.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

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.

(i) Both A and R are correct and R is the correct explanation of A.
(ii) Both A and R are correct but R is not the correct explanation of A.
(iii) Both A and R are not correct
(iv) A is not correct but R is correct.

Answers (1)

The answer is the option (i) Both A and R are correct and R is the correct explanation of A.Li_{2}CO_{3} is unstable and decomposes on heating. Lithium being very small in size polarises large carbonate ion leading to Li_{2}O which is more stable due to higher lattice energy.

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