Question

The correct order of the metalic 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 $K>Mg>Al>B$

As ionisation energy decreases electropositive character increases and thus the tendency to form cation increases. Therefore, metalic character increases.