Question

The more electropositive metal among the following is :

• A. Ca
• B. Na
• C. Mg
• D. K

Answer 1

Answer: (D)

K

Alkali metals are more electropositive than alkaline earth metals. Thus $Na$ and $K$ are more electropositive than $Ca$ and $Mg$. The electropositive nature of alkali metals increases with increase in the atomic number. Thus $K$ is more electropositive than sodium.