1.

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

Answer»

(b) IV < II < III < I 



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