Which pieces of information are needed to explain why NiCl₄^2- is paramagnetic? I.It has six d electrons. II.It has eight d electrons. III.It is strong field. IV.It is weak field. V.It is tetrahedral. VI.It is square planar. A)I, IV, either V or VI B)II, IV, either V or VI C)II, III, VI D)II, III, either V or VI E)I, III, V

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NiCl2 in its complex form can be paramagnetic due to having unpaired electrons. The correct configuration for Ni2+ would involve eight d electrons (II). Whether a complex is paramagnetic or not also depends on the ligand field strength; in this case, being a weak field ligand (IV) would not cause pairing of the d electrons, thus contributing to paramagnetism. The geometry (either tetrahedral (V) or square planar (VI)) can influence the electronic arrangement and thus the magnetic properties, but the specific geometry is less directly relevant to the paramagnetism than the electron count and field strength.

Which Pieces of Information Are Needed to Explain Why NiCl42-

Which Pieces of Information Are Needed to Explain Why NiCl₄^2-