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The following compounds have been arranged in the order of their increasing thermal stabilities. Identify the correct order. `K_(2)CO_(3)(I),Na_(2)CO_(3)(II),Rb_(2)CO_(3)(III),Li_(2)CO_(3)(IV)`A. `I lt II lt III lt IV`B. `IV lt II lt III lt I`C. `IV lt II lt I lt III`D. `II lt IV lt III lt I` |
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Answer» Correct Answer - 3 The thermal stabilites of carbonates increase down the group due to increase in metallic character `i.e.` electropositive character . Further bigger cation stabiliese bigger anion through crystal lattice energy effects. |
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