Which one of the following ions has electronic configuration `[Ar]3d^(6)` ? `(At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)`

Which of the following ions have electronic configuration [Ar]3d^(7)

Which one of the following ions has electronic configuration [Ar]3d^6 (Atomic number of Mn = 25, Fe = 26,C_@ = 27, N i = 28)

Which of the following is the correct electronic configuration of Fe^(3+) ion ? (Z for Fe = 26)

Which of the following is the correct electronic configuration of Fe^(3+) ion ? (Z for Fe = 26)

Which of the following is the correct electronic configuration of Fe^(3+) ion ? (Z for Fe= 26)

Among the following series of transition metal ions, the one where all metal ions have 3d^2 electronic configuration is (At. nos. Ti = 22, V = 23, Cr = 24, Mn = 25)

Bessemer converter is used for Atomic nos, Mn = 25, Fe = 26, Co = 27, Ni = 28

Which of the following species is expected ot show the highest magnetic moment? (At.Nos.: Cr = 24, Mn = 25, Co = 27, Ni = 28, Cu = 29 )

The d-electron configurations of Cr^(2+), Mn^(2+), Fe^(2+) and Co^(2+) are d^4,d^5,d^6 and d^7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour ? (At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)