question_answer

  How would you account for the following. (i)is more acidic than . (ii) The N?0 bond in N0^ is shorter than the N?0 bond in . (iii) Both  and  stabilize high oxidation states but the ability of oxygen to stabilize the higher oxidation state exceeds that of fluorine.                                                                                                                                                 [3 x 1]

Answer:

  (i) is more acidic than As we go down the group, electro negativity decreases hence stability of (H?X) bond decreases. Thus tendency of the (H?X) to release increase. Thus, with weak (H?S) bond is more acidic than         [1] (ii) In two resonating structures and in three resonating structures are formed. Thus (N?O) bond length in is shorter than that in . (iii) Fluorine is the most electronegative element with valency (-1). It stabilises the metal ion by single bond formation as inOxygen forms multiple bonds with metals and stabilises the compound to a greater extent. is stable due to multiple bonds.                   [1]