Question

Which ion has the least value of theoritical magnetic moment?

• A. ${Cr}^{3+}$
• B. ${Co}^{3+}$
• C. ${Ti}^{3+}$
• D. $V^{3+}$

Answer 1

Answer: (C)

${Ti}^{3+}$

$T{i}^{3+}$ has the lowest number of unpaired electrons. Hence, it has the least value of theoretical magnetic moment.

$C{r}^{3+}$ with $3d^3$ outer electronic configuration has 3 unpaired electrons.

$C{o}^{3+}$ with $3d^6$ outer electronic configuration has 4 unpaired electrons.

$T{i}^{3+}$ with $3d^1$ outer electronic configuration has 1 unpaired electron.

$V^{3+}$ with $3d^2$ outer electronic configuration has 2 unpaired electrons.