Nickel (Z = 28) combines with a uninegative monodentate ligand \[{{X}^{-}}\] to form a paramagnetic complex \[{{[Ni{{X}_{4}}]}^{2-}}\]. The number of unpaired electron(s) in the nickel and geometry of the complex ion are, respectively:

Nickel (Z = 28) combines with a uninegative monodentate ligand \[{{X}^

1.	Nickel (Z = 28) combines with a uninegative monodentate ligand \[{{X}^{-}}\] to form a paramagnetic complex \[{{[Ni{{X}_{4}}]}^{2-}}\]. The number of unpaired electron(s) in the nickel and geometry of the complex ion are, respectively:
A.	One, tetrahedral
B.	Two, tetrahedral
C.	One, square planar
D.	Two, square planar
Answer» C. One, square planar

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Nickel (Z = 28) combines with a uninegative monodentate ligand \[{{X}^{-}}\] to form a paramagnetic complex \[{{[Ni{{X}_{4}}]}^{2-}}\]. The number of unpaired electron(s) in the nickel and geometry of the complex ion are, respectively:

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