Question:
Which of the following complex will show fac & mer isomerism?
Which of the following complex will show fac & mer isomerism?
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Fac-mer isomerism occurs in octahedral complexes with bidentate ligands, resulting in different arrangements of the ligands.
Updated On: Jan 12, 2026
- \( [Co(NH_3)_3(NO_2)_3] \)
- \( [CoCl_2(en)_2]^+ \)
- \( [Co(NH_3)_3Cl_3] \)
- \( [Co(NH_3)_2Cl_2(en)]^+ \)
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The Correct Option is B
Solution and Explanation
Step 1: Understanding Fac & Mer Isomerism.
Fac-mer isomerism occurs in octahedral complexes where the ligands are arranged in a specific way. The complex \( [CoCl_2(en)_2]^+ \) has two bidentate ligands (ethylenediamine), which can lead to fac-mer isomerism depending on their spatial arrangement.
Step 2: Conclusion.
The correct answer is (B), \( [CoCl_2(en)_2]^+ \).
Fac-mer isomerism occurs in octahedral complexes where the ligands are arranged in a specific way. The complex \( [CoCl_2(en)_2]^+ \) has two bidentate ligands (ethylenediamine), which can lead to fac-mer isomerism depending on their spatial arrangement.
Step 2: Conclusion.
The correct answer is (B), \( [CoCl_2(en)_2]^+ \).
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