Question

What is the type of magnetic behavior and geometry respectively in Cuprammonium sulfate (atomic no. of Cu = 29)?

• A. Paramagnetic and tetrahedral
• B. Diamagnetic and pyramidal
• C. Diamagnetic and tetrahedral
• D. Paramagnetic and square planar

Hint:

For transition metal complexes, the magnetic behavior is often related to the number of unpaired electrons, while the geometry depends on the ligands and coordination number.

Answer 1

The Correct Option is D

Step 1: Understanding magnetic behavior and geometry.
Cuprammonium sulfate contains Cu\(^{2+}\) ions, which are paramagnetic due to the presence of unpaired electrons. The geometry of the complex is square planar due to the coordination of ligands with the central Cu\(^{2+}\) ion.
Step 2: Analyzing the options.
(A) Paramagnetic and tetrahedral: Tetrahedral geometry is not observed for this complex.
(B) Diamagnetic and pyramidal: The complex is paramagnetic, not diamagnetic.
(C) Diamagnetic and tetrahedral: The complex is paramagnetic, not diamagnetic.
(D) Paramagnetic and square planar: This is correct. The complex is paramagnetic with square planar geometry.
Step 3: Conclusion.
The correct answer is (D) Paramagnetic and square planar.