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JEE Main Chemistry question

ChemistryThe s-Block ElementsJEE Main

Not in JEE Main or NEET syllabus

is insoluble in water, while is highly soluble, due to

Answer: (D)

Solution

is a very small, highly charge-dense "hard" cation that binds the hydroxide ion extremely tightly (very high lattice energy relative to hydration energy), keeping insoluble, whereas the much larger, more weakly polarising has a comparatively lower lattice energy, allowing to

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Question ID VK-137699