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

Soln:

Answer is (a) Be Mg Ca

Explanation:

Metallic character increase as we move down the group. In the elements that belong to same group Berrylium is at the top and Calcium is at the bottom.