Write down the number of 3d electrons in each of the following ions: $T i^{2 +}, V^{2 +}, C r^{3 +}, M n^{2 +}, F e^{2 +}, F e^{3 +}, C o^{2 +}, N i^{2 +}$ and $C u^{2 +}$ . Indicate how would you expect the five $3 d$ orbitals to be occupied for these hydrated ions (octahedral).

Open in App

Solution

The number of 3d electrons and the occupancy of 3d orbitals for various transition metal ions are as shown.
$T i^{2 +} : 3 d^{2} : t_{2 g}^{2} e_{g}^{0}$
$V^{2 +} : 3 d^{3} : t_{2 g}^{3} e_{g}^{0}$
$C r^{3 +} : 3 d^{3} : t_{2 g}^{3} e_{g}^{0}$
$M n^{2 +} : 3 d^{5} : t_{2 g}^{3} e_{g}^{2}$
$F e^{2 +} : 3 d^{6} : t_{2 g}^{4} e_{g}^{2}$
$F e^{3 +} : 3 d^{5} : t_{2 g}^{3} e_{g}^{2}$
$C o^{2 +} : 3 d^{7} : t_{2 g}^{5} e_{g}^{2}$
$N i^{2 +} : 3 d^{8} : t_{2 g}^{6} e_{g}^{2}$
$C u^{2 +} : 3 d^{9} : t_{2 g}^{6} e_{g}^{3}$

Suggest Corrections

Similar questions

M^{2 +}

Z n^{2 +} > S c^{2 +} = C u^{2 +} > T i^{2 +} = N i^{2 +} > V^{2 +} = C o^{2 +} > C r^{2 +} = F e^{2 +} > M n^{2 +}

C u^{+}, F e^{2 +}, M n^{2 +}, C r^{3 +}, S c^{3 +}, T i^{4 +}

C u^{2 +}, N i^{2 +}, C o^{2 +}, F e^{2 +}

M n^{2 +}

C u^{+}, F e^{2 +}, M n^{2 +}, C r^{3 +}, S c^{3 +}, T i^{4 +}

F e^{2 +}, F e^{3 +}, C r^{2 +}, C r^{3 +}, M n^{2 +}, M n^{3 +}

Join BYJU'S Learning Program