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