Question:

The total number of isomers for a square planar complex [M(F)(Cl)(SCN)(NO\(_2\))] is

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Count geometrical isomers of an Mabcd square planar complex (3) and multiply by the linkage possibilities of the two ambidentate ligands SCN and NO\(_2\).
Updated On: Nov 5, 2026
  • 16
  • 8
  • 12
  • 4
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The Correct Option is C

Solution and Explanation

For a square planar complex of type [Mabcd] there are 3 geometrical isomers (fix a; its trans partner can be b, c or d).
SCN\(^-\) is ambidentate (binds through S or N): 2 linkage modes. NO\(_2^-\) is ambidentate (binds through N or O): 2 linkage modes.
Total isomers = 3 \(\times\) 2 \(\times\) 2 = 12.
Answer: (3) 12
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