Calculate the magnetic moment of [Fe(CN)6]4-.
Answer & explanation
Correct answer: option 4
In [Fe(CN)6]4- ion
x + 6(-1) = -4
x - 6 = -4
x = -4 + 6 = 2
Fe2+: [Ar]3d6
But CN- is a strong field ligand and it will pair up all the electrons.
Hence, Magnetic moment is zero.