Question

Which pair of ions have same electronic configuration???

Answer 1

The pair of ions having same electronic configuration is "Fe3 + and Mn2+" will have the same number of electrons.

Answer 2

Answer:

$Fe^{3+} and Mn^{2+}$ this pair of ions have same electronic configuration.

Explanation:

$Fe^{3+} and Mn^{2+}$ will have the same electron configuration .

Where Fe  is iron and Mn is manganese .

Proof :

The electronic  configuration  of

$Fe^{3+} and Mn^{2+}$ are :

For $Fe^{3+}$ :

Fe (Z = 26 ) , [Ar]3$d^{6}4s^{2}$  and

$Fe^{3+}$ has [$Ar$]3$d^{5}$

Similiarly for $Mn^{2+}$ :

Mn (Z = 25 ) , [Ar]3$d^{5}4s^{2}$ and

$Mn^{2+}$ has [Ar]3$d^{5}$

Final answer :

Hence , $Fe^{2} and Mn^{2+}$ have similarly  electron configuration .