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The S-Block Elements

Question
CBSEENCH11007149
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How would you explain that BaO is insoluble but BeSO4 is soluble in water?

Solution
BaO and BaSO4 are ionic compounds. Further the size of O2– ion is much smaller as compared to that of SO42– ion. Also, a bigger anion stabilises a bigger cation more than a smaller anion stabilises a bigger cation. As a result lattice enthalpy of BaO is much less than that of BaSO4 and hence BaO is insoluble in water while BaSO4 is soluble

Some More Questions From The s-Block Elements Chapter

Which is the most reactive alkali metal and why?

Why alkali metals do not form M2+ ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

Why does lithium form complexes?

Why are alkali metal ions diamagnetic and colourless?

Why are alkali metals the most electropositive in nature?

Explain why is sodium less reactive than potassium.

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