Question

Considering the elements $B,Al,Mg,K,$ the correct order of their metallic character is :

• A. $B>Al>Mg>K$
• B. $Al>Mg>B>K$
• C. $Mg>Al>K>B$
• D. $K>Mg>Al>B$

Answer 1

The correct option is D $K>Mg>Al>B$

From right to left across a period, the metallic character increases because the attraction between valence electron and the nucleus is weaker, enabling an easier loss of electrons.

Metallic character increases as you move down a group because the atomic size is increasing.

Hence, correct order will be $K>Mg>Al>B$.