Question

Among the elements $B,Mg,Al$ and $K$, the correct order of increasing metallic character is:

• A. $B<Al<Mg<K$
• B. $B<Mg<Al<K$
• C. $Mg<B<Al<K$
• D. $Mg<Al<B<K$
• E. $K<Mg<Al<B$

Answer 1

The correct option is A $B<Al<Mg<K$

In Periodic Table, metallic character of elements increases as we move down in the group and decrease as we move left to right in a period.

Thus, correct order of metallic character of $B,Mg,Al$ and $K$ is:
$B<Al<Mg<K$.

Hence, the correct option is $\text{A}$