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in S - block elements - alkali and alkaline earth metals by (63.7k points)

Which is/are true statements ? 

(A) The heats of hydration of the dipositive alkaline earth metal ions decrease with an increase in their ionic size. 

(B) Hydration of alkali metal ion is less than that of II A. 

(C) Alkaline earth metal ions, because of their much larger charge to size ratio, exert a much stronger Electrostatic attraction on the oxygen of water molecule surrounding them. 

(D) None

1 Answer

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(A) The heats of hydration of the dipositive alkaline earth metal ions decrease with an increase in their ionic size. 

(B) Hydration of alkali metal ion is less than that of II A. 

(C) Alkaline earth metal ions, because of their much larger charge to size ratio, exert a much stronger Electrostatic attraction on the oxygen of water molecule surrounding them. 

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