The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order.
$K_{2} C O_{3} (I), M g C O_{3} (I I), C a C O_{3} (I I I), B e C O_{3} (I V)$

I < II < III < IV

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IV< II < III < I

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IV< II < I < III

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II < IV < III < I

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Solution

The correct option is B IV< II < III < I
The increasing thermal stability is
$B e C O_{3} < M g C O_{3} < C a C O_{3} < K_{2} C O_{3}$
(IV) (II) (III) (I)
Note: Inceasing size of cation decreases its polarization ability towards carbonate, making the compound more stable.

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The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order.
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Chemical Reactivity (Group 1)

Standard XII Chemistry

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The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order. K2CO3(I), MgCO3(II), CaCO3(III), BeCO3(IV)

The correct option is B IV< II < III < IThe increasing thermal stability is BeCO3<MgCO3<CaCO3<K2CO3 (IV) (II) (III) (I) Note: Inceasing size of cation decreases its polarization ability towards carbonate, making the compound more stable.

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order.
$K_{2} C O_{3} (I), M g C O_{3} (I I), C a C O_{3} (I I I), B e C O_{3} (I V)$

The correct option is B IV< II < III < I
The increasing thermal stability is
$B e C O_{3} < M g C O_{3} < C a C O_{3} < K_{2} C O_{3}$
(IV) (II) (III) (I)
Note: Inceasing size of cation decreases its polarization ability towards carbonate, making the compound more stable.