MCQ
The electronic configuration $1{s^2},2{s^2}{p^6},3{s^2}{p^6}{d^6}$ corresponds to
- A$M{n^{2 + }}$
- ✓$F{e^{2 + }}$
- C$Co$
- D$Ge$
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$(I)\,[Cr(NO_3)_3(NH_3)_3]$ $(II)\, K_3[Fe(C_2O_4)_3]$ $(III)\,[CoCl_2(en)_2]^+$ $(IV)\, [CoBrCl(ox)_2]^{3-}$