The measured magnetic moment of [Ni(SCN) 4]2- is effectively zero, while the magnetic moment of [NiCl4]2- approximates to 2.83 μB. Why?
A) [Ni(SCN) 4]2- is low spin and [NiCl4]2- is high spin in a tetrahedral ligand field giving different numbers of unpaired electrons.
B) [Ni(SCN) 4]2- is tetrahedral and [NiCl4]2- is square planar.
C) [Ni(SCN) 4]2- is high spin and [NiCl4]2- low spin in a tetrahedral ligand field giving different numbers of unpaired electrons.
D) [Ni(SCN) 4]2- is square planar and [NiCl4]2- is tetrahedral.
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