The experimental magnetic moments of following Ni(II) complex at room temperature was found to be in the range 0.12 BM. (i) based on this observation, specify whether the geometry of the metal coordination of this complex is tetrahedral or square planar; (ii) explain briefly your answer above; (iii) draw an energy level diagram for the d-electrons in the central Ni+ ion (assume the 4 Ni-N coordinative bonds are equivalent). (3+4+3 points) [Ref: Mesut Kacan and co-workers, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2014, 118(24), p. 572-577. DOI: 10.1016/j.saa 2013.09.031] NH2 NH2 2 CH