Question

Give the electronic configuration of Mn²⁺ and Cr³⁺

Answer 1

Electronic configuration of Mn²⁺:

Mn-- Atomic number -25
No. Of protons=25
No, Of electrons=25

Mn²⁺=Mn atom looses two electrons : 
No. of protons : 25
No. of electrons : 23
electronic configuration of Mn²⁺ : 1s2 2s2 2p6 3s2 3p5 4s2 3d3

Cr- Chromium - Atomic number -24
No. Of protons=24
No, Of electrons=24

Cr²⁺=Cr atom looses three electrons : 
No. of protons : 24
No. of electrons : 21
electronic configuration of cr³⁺ : 1s2 2s2 2p6 3s2 3p5 4s2 3d1