Matchthe elements given in Column-I with the propertiesmentioned in Co

1.	Matchthe elements given in Column-I with the propertiesmentioned in Column-II :
Answer» Solution :(A) Li- Due to very high hydration enthalpy, `E^(-)`is most negative. (B) Na - Na gives NaOH (strong BASE). One mole of it REPLACES 1 mol `H^(+)` from acid therefore it is strongest monoacidic base. (C ) Ca -Hydrationenergy is very low therefore, calciumoxalate is insoluble. (D) BA - Hydration energy is low as the size `Ba^(2+)` is large therefore barium sulphare is insoluble. `6s^(2)` is valenceshell electronic CONFIGURATION.

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