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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 monoacidic base
(iii) Ca (c) Most negative E^{\Theta } value among alkali metals
(iv)Ba (d)Insoluble oxalate
  (e)6s^{2} electronic configuration



 

Answers (1)

(i) – (c) Due to extremely high hydration enthalpy, E^{\Theta } is most negative

(ii) – (b) Na gives NaOH (strong base) which is the strongest monoacidic base.

(iii) – (d) Calcium oxalate is insoluble due to low hydration energy

(iv) – (a,e) Ba^{2+} is large in size.So its hydration energy is low and barium sulphate 

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