Question

Which of the following acts as a better metal?

• A. Li
• B. Na
• C. K
• D. Rb

Answer 1

The correct option is D

Rb

We all know that as we go down the group, the electropositivity (The ability of the element to donate electrons) increases i.e., it becomes easier to remove the valence electron. Therefore the metallic character increases as we go down the group. Hence, Rb is a better metal compared to $Li,Na\&K$.