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
Ans (b)
Sol
Metallic character decreases when we move from left to right in a period
Na > Mg > Al > Si > Cl
Hence option (b) is correct.