Match the elements given in Column I with the properties mentioned in Column II. `{:(Column I,Column II),(A.Li,1."Insoluble sulphate"),(B.Na,2."Strongest monoacidic base"),(C.Ca,3."Most negative" E^(Theta) "value among alkali metals"),(D.Ba,4."Insoluble oxalate"),(,5.6s^(2)"outer electronic configuration"):}`

Match the elements given in Column I with the properties mentioned in

1.	Match the elements given in Column I with the properties mentioned in Column II. `{:(Column I,Column II),(A.Li,1."Insoluble sulphate"),(B.Na,2."Strongest monoacidic base"),(C.Ca,3."Most negative" E^(Theta) "value among alkali metals"),(D.Ba,4."Insoluble oxalate"),(,5.6s^(2)"outer electronic configuration"):}`
Answer» Correct Answer - A. `rarr(3)` B. `rarr(2)` C. `rarr(4)` D. `rarr(5)` A. `Li-`Most negative `E^(-)` among alkali metals [Due to very high hydration energy the resulting `E^(Theta)` is most negative] B. Na-Strongest monoacidic base [Alkalies are more acidic than alkaline earth metals. LiOh has covalent character]. C-Ca insoluble oxalate [Calcium oxalate is insoluble in water] D. Ba-Insoluble sulphate [Hydration energy decreases as size of cation increases]. `6s^(2)` outer electronic configuration. `._(56)Ba = 1s^(2),2s^(2),2p^(6),3s^(2),3p^(6),3d^(10),4s^(2),4p^(6),4d^(10),5s^(2),5p^(6),6s^(2)]`

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