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Match the elements given in the Column -...

Match the elements given in the Column - 1 with the properties mentioned in Column - II

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The correct Answer is:
A-R,B-Q,C-S,D-PT
(i) Li - Most negative `E^(@)` among the alkali metals [ Due to very high hydration energy the re­sulting `E^(@)` is most negative]
(ii) Na - strongest monoacidic base [Alkalies aer more acidic than alkaline earth metals. LiOH has covalent character]
(iii) Ca - insoluble oxalate [calcium oxalate is insoluble in water]
(iv) Ba - Insoluble sulphate [Hydration energy decreases as size of cation increases] `6s^(2)` outer electronic configuration
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