Duration: 4:42

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STATEMENT BASED
(1) Both Statement-I and Statement-II are correct.
(2) Both Statement-I and Statement-II are incorrect.
(3) Statement-I is correct and Statement-II is incorrect.
(4) Statement-I is incorrect and Statement-II is correct.
Statement-I: As the electropositive character increases down the group, the stability of carbonates and hydrogen carbonates of alkali metals increases.
Statement-II: Lithium carbonates are not so stable to heat: lithium being very small in size polarises a large \( \mathrm{CO}_{3}{ }^{2-} \) ion leading to the formation of more stable \( \mathrm{Li}_{2} \mathrm{O} \) and \( \mathrm{CO}_{2} \).
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