Match the elements given in Column I with the properties mentioned in Column II . {:("Column I" ,, "Column II") , ((i)Li , (a),"Insoluble sulphate"), ((ii) Na , (b) , "Strongest monoacids base"), ((iii) Ca , (c) , "Most negative" E^(Theta) "value among alkali metals"), ((iv) Ba , (d) , "Insoluble oxalate"), (, (e) , 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") , ((i)Li , (a),"Insoluble sulphate"), ((ii) Na , (b) , "Strongest monoacids base"), ((iii) Ca , (c) , "Most negative" E^(Theta) "value among alkali metals"), ((iv) Ba , (d) , "Insoluble oxalate"), (, (e) , 6s^(2) "outer electronic configuration"):}
Answer» Solution : `(i) to (c) , (II) to (b) , (iii) to (d) , (iv) to (a,E)` Due to lower `Delta_(i) H_(1)` of Na (`496 kJ mol^(-1))` than Li `(520 kJ mol^(-1))` , Na is a stronger monoacidic base , than Li, `BaSO_(4)` is insoluble while barium oxalate is SOMEWHAT soluble , therefore , (iii) matches with (d) . SIMILARLY , barium sulphate is insoluble but calcium sulphate is somewhat soluble .