Arrange the following elements in the order of their decreasing metallic character Na, Si, Cl, Mg, Al.
  1. Cl > Si > Al > Mg > Na
  2. Na > Mg > Al > Si > Cl
  3. Na > Al > Mg > Cl > Si
  4. Al > Na > Si > Ca > Mg

AcademicChemistryNCERTClass 10

Correct answer: (b) Na > Mg > Al > Si > Cl

Explanation:   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 the 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: Na > Mg > Al > Si > Cl.

raja
Updated on 10-Oct-2022 13:19:22

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