Question

Considering the elements B, Al, Mg, and 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

Answer: (D)

K > Mg > Al > B

Answer 2

The metallic character of elements decreases from left to right across a period. Thus, the metallic character of$Mg$ is more than that of $Al$.
The metallic character of elements increases down a group.
Thus, the metallic character of $Al$ is more than that of $B$.
Considering the above statements, we get $K > Mg$.

Hence, the correct order of metallic character is
$K > Mg > Al > B$