(D) The general electronic configuration $ns^1$ corresponds to the group $1$ elements (alkali metals). Among the given options,$Ca$,$Sr$,and $Ba$ belo

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(D) The general electronic configuration $ns^1$ corresponds to the group $1$ elements (alkali metals). Among the given options,$Ca$,$Sr$,and $Ba$ belong to group $2$ (alkaline earth metals) with a general configuration of $ns^2$. Francium $(Fr)$ belongs to group $1$,therefore it has the general electronic configuration $ns^1$.