Question

Write the electronic configuration of the following and report the number of unpaired electron in each case
A. `Mn^(3+)`
B. `Fe^(3+)`
C. `Cr^(2+)`
D. `Zn^(2+)`

Answer 1

a.`Mn^(4+) (Z= 25):1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(3)`
b.`Fe^(3+) (Z= 26):1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)`
c.`Cr^(2+) (Z= 24):1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(4)`
d.`Zn^(2+) (Z= 30):1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)`