Which ion in the ground state has the same electron configuration as an atom argon in the ground state?

The correct answer of the given question above would be POTASSIUM  (K+). The ion in the ground state that has the same electron configuration as an atom argon in the ground state would be potassium. Hope this is the answer that you are looking for.  

Ithink it’s 3 as the answer.

You can still be friends with each other. you don't have to date since he likes someone else. just stick to being friends for now