question_answer 40)

    Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al. (a)                                          (b) (c)                                           (d)

Answer:

                  (b) Metals lie on the extreme left side of the periodic table. Metallic character decreases from left to right in a period. Na, Si, Cl, Mg, Al belong to same period in the order Na, Mg, Al, Si, Cl. On moving in a period from left to right, the metallic character decreases. Thus, the order of decreasing metallic character is