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

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

(a) Cl > Si >Al > Mg >Na

(b) Na >Mg >Al >Si > Cl

(c) Na > Al > Mg > Cl > Si

(d) Al > Na> Si > Ca> Mg

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The answer is (b) Na >Mg >Al >Si > Cl

  • Na has 1, magnesium has 2 , aluminium has 3 and Chlorine has 7 electrons in its valence shells. 
  • Hence Sodium shows maximum metallic characters followed by Magnessium, aluminium and chlorine shows non-metallic properties.
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