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How would you explain the following obse...

How would you explain the following observations ?
(i) BeO is almost insoluble but `BeSO_(4)` is soluble in water
(ii) BaO is soluble but `BaSO_(4)` is insoluble in water
(iii) LiI is more soluble than KI in ethanol

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Verified by Experts

BeO is covalent in nature and is almost insoluble in water. On the other hand, `BeSO_4` is ionic in nature and is soluble in water. Its hydration energy is much higher than that of its lattice energy due to small size of `Be^(2+)` ions. This is why it is soluble in water.
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ICSE-THE s - BLOCK ELEMENTS-NCERT TEXT-BOOK. EXERCISES (WITH HINTS AND SOLUTIONS)
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  10. State as to why (a) a solution of Na(2)CO(3) is alkaline ? (b) alk...

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  16. How would you explain the following observations ? (i) BeO is almost...

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  18. Which of the alkali metal is having least melting point ?

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  19. Which one of the following alkali metals gives hydrated salts?

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