Question

For \([ \text{NiCl}_4 ]^{2-}\), what is the charge on the metal and shape of the complex respectively?

• A. \( +2, \text{Tetrahedral} \)
• B. \( +2, \text{Square planar} \)
• C. \( +4, \text{Tetrahedral} \)
• D. \( +4, \text{Square planar} \)

Hint:

For tetrahedral complexes, the metal ion typically has a +2 charge when the ligands are simple anions like \( \text{Cl}^- \).

Answer 1

The Correct Option is A

The complex ion \([ \text{NiCl}_4 ]^{2-}\) has a charge of -2. The central metal ion is Ni with a +2 charge, and the geometry of the complex is tetrahedral.