Question

Write down the electronic configuration of: (i) Cr3++ (iii) Cu+ (v) Co2+ (vii) Mn2+ (ii) Pm3+ (iv) Ce4+ (vi) Lu2+ (viii) Th4+

Answer 1

Dear Student,

Following are the electronic configurations of required entities.

(i) Cr3+

1s2 2s2 2p6 3s2 3p6 3d3

(ii) Cu+

1s2 2s2 2p6 3s2 3p6 3d10

(iii) Co2+

1s2 2s2 2p6 3s2 3p6 3d7

(iv) Mn2+

1s2, 2s2 2p6 3s2 3p6 3d5

(v) Pm3+

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f4

(vi) Ce4+

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6

(vii) Lu2+

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d1

(viii) Th4+

1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s2 6p6

Hope that is helpful...