Question

electronic configuration of Mn2+ and Cr3+​

Answer 1

Answer:     MN2+  ,  Cr3-  

                           Mn2+=25  

                           Cr3-  =24                                                                                                

                         Mn2+ =1S2,2S2,2P6,3S2,3P6,4S2,3D5

                         Cr3 - =1S2,3S2,2P6,3S2,3P6,4S2,3D4

                          hence the answer .........

             

                      HOPE YOU WOULD ENJOY..........

Answer 2

Given:

Two elements are Mn2+ and Cr3+.

To Find:

The electronic configuration of Mn2+ and Cr3+.

Solution:

The atomic number of Mn is 25 and the atomic number of Cr is 24.

So, an electronic configuration is given by 1s2s2p3s3p4s3d

So, the electronic configuration of Mn is

$1s²2s²2{p}^{6}3 {s}^{2} 3 {p}^{6}3 {d}^{5} 4 {s}^{2}$

The electronic configuration of Mn2+ is

$1s²2s²2{p}^{6}3 {s}^{2} 3 {p}^{6}3 {d}^{5}$

Now,

The electronic configuration of Cr is

$1s²2s²2{p}^{6}3 {s}^{2} 3 {p}^{6}3 {d}^{4} 4 {s}^{2}$

The electronic configuration of Cr3+ is

$1s²2s²2{p}^{6}3 {s}^{2} 3 {p}^{6}3 {d}^{3}$

Henceforth, the electronic configuration of Mn2+ and Cr3+ is $1s²2s²2{p}^{6}3 {s}^{2} 3 {p}^{6}3 {d}^{4} 4 {s}^{2} and \: 1s²2s²2{p}^{6}3 {s}^{2} 3 {p}^{6}3 {d}^{3}$respectively.