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JEE Main2006ChemistryCoordination CompoundsActual

Nickel (Z=28) combines with a uninegative monodentate ligand X ⁻ to form a paramagnetic complex [ NiX ₄ ]²⁻ . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

Options

  1. Aone, tetrahedral
  2. Btwo, tetrahedral
  3. Cone, square planar
  4. Dtwo, square planar

Correct answer

B. two, tetrahedral

Step-by-step solution

₂₈ Ni : s ^2, 3 p ^6, 3 ~d ^8, 4 ~s ^2 Ni ²⁺: 3 ~s ^2, 3 p ^6, 3 ~d ^8

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