Question

The correct order of metalic characters for the given elements is:
$B,Na,Al,K$

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

Answer 1

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

Metallic character decreases as we move from left to right across a period and increases down a group.

Down the group it follows the order: $K>Na$ and $Al>B$
Across the period, the order is: $Na>Al$
Hence, the overall order will be: $K>Na>Al>B$