Question

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

Answer 1

Answer:

where are the pairs bro....

Answer 2

Answer: Mn2+,Fe3+

The elements are in the first series so the general configuration is ns2(n−1)dx

The electron configuration of Mn is 4s23d5 and Fe is 4s23d6 Any configuration of X2+ loses two 4s and any configuration of X3+ loses two 4s and one 3d.

⇒Mn2+→3d5 and Mn3+→3d4

⇒Fe2+→3d6 and Fe3+→3d5