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Q.

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

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a

I

b

IV

c

IV

d

II

answer is B.

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Detailed Solution

Down the group (↓), stability of the carbonates increases due to increasing compatibility of size of M2+ and CO32−. Hence the order is IV
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