Question

Indicate the complex ion which shows geometrical isomerism.

• A. \([Cr(H_2O)_4Cl_2]^+\)
• B. \([Pt(NH_3)_3Cl]_2^-\)
• C. \([Co(NH_3)_6]^{3+}\)
• D. \([Co(CN)(NC)]^{3-}\)

Hint:

Geometrical isomerism occurs in square planar and octahedral complexes when two different ligands can be arranged in different spatial orientations.

Answer 1

The Correct Option is A

Step 1: Understanding geometrical isomerism.
- Geometrical isomerism occurs in square planar and octahedral complexes when ligands can be arranged in cis and trans positions.
Step 2: Identifying the correct complex.
- \([Cr(H_2O)_4Cl_2]^+\) is an octahedral complex with two identical ligands (\( Cl^- \)), which can be cis or trans.