Which of the carbonates given below is unstable in air and is kept in $C O_{2}$ atmosphere to avoid decomposition?

B e C O_{3}

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M g C O_{3}

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C a C O_{3}

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B a C O_{3}

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Solution

The correct option is A $B e C O_{3}$
Beryllium carbonate is unstable due to the smaller size of cation and larger size of anion (as smaller cation stabilizes smaller anion through crystal lattice energy) and can be kept only in the atmosphere of $C O_{2}$ . The thermal stability increases with increasing cationic size.
Hence, $B e C O_{3}$ is unstable in air.

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Similar questions

Which of the carbonates given below is unstable in air and is kept in $C O_{2}$ atomosphere to avoid decomposition?
(a) $B e C O_{3}$ (b) $M g C O_{3}$ (c) $C a C O_{3}$ (d) $B a C O_{3}$

Q. Decomposition temperature of

C a C O_{3}

(s) is approximately

900^{0} C

. Which of the following decompose below

900^{0} C

Q. Arrange the following in increasing lattice energy.

B e C O_{3}, M g C O_{3}, C a C O_{3}, S r C O_{3}, B a C O_{3}

Q. The thermal stability of alkaline earth metal carbonates–

M g C O_{3}, C a C O_{3}, S r C O_{3}

and

B a C O_{3}

, follows the order:

The correct order of increasing thermal stability of $K_{2} C O_{3}, M g C O_{3}, C a C O_{3} a n d B e C O_{3}$ is:

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Which of the carbonates given below is unstable in air and is kept in CO2 atmosphere to avoid decomposition?

Which of the carbonates given below is unstable in air and is kept in $C O_{2}$ atmosphere to avoid decomposition?