Which one of the following pairs of ions have the same electronic configuration?

Which one of the following pairs of ions have the same electron configuration

Which one of the following pairs of ions has the same electronic configuration?

Which of the following pairs of ions have the same electronic configuration ?

Which of the following pairs of ions have the same electronic configuration ?

Which of the following pairs of ions have the same electronic configuration

Which of the following pairs of ions have the same electronic configuration A) Cr^(+3),Fe^(+3) B) Fe^(+3),Mn^(+2) C) Fe^(+3),Co^(+3) D) Sc^(+3),Cr^(+3)