Q. 174.3( 6 Votes )
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
Answer :
Metallic character decreases on going from left to right in a period. This is due to decreased atomic size which increases the tendency of an element to gain electrons. The metallic character increases on going down in a group due to tendency to lose electrons.
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