Question

Which of the following set of elements is written in order of their increasing metallic character?

• A. Be, Mg, Ca
• B. Na, Li, K
• C. Mg, Al, Si
• D. C, O, N

Answer 1

The correct option is A Be, Mg, Ca

The metallic character trend can be written as : $Ca>Mg>Be$.

On moving down a group, the metallic character (tendency to loose electron) increases as the force of attraction between the nucleus and the outermost electron decreases (atomic size increases).

Hence the correct option is A.