Question

The spin-multiplicity of $F{e}^{3+}\left(Ec\right[Ar\left]3d^5\right)$ in its ground state but placed in a strong $O_h$ magnetic field is:

• A. 6
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (B)

2

$F{e}^{3+}=3d^5$ (Valance shell)
$s=\frac{1}{2}$ in strong $O_h$ magnetic field

• Spin multiplicity $=2\left(s\right)+1=2$.