Question

Nickel (Z = 28) combines with a uninegative monodentate ligand X– to form a paramagnetic complex [NiX₄]²⁻. The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively : (a) one, square planar (b) two, square planar(c) one, tetrahedral (d) two, tetrahedral

Answer 1

Z = 2,8,8,10


is that atomic mass for nickel