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What is Spectrochemical Series? Explain the Difference Between a Weak Field Ligand and a Strong Field Ligand. - CBSE (Science) Class 12 - Chemistry

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Question

What is spectrochemical series? Explain the difference between a weak field ligand and a strong field ligand.

Solution

A spectrochemical series is the arrangement of common ligands in the increasing order of their crystal-field splitting energy (CFSE) values. The ligands present on the R.H.S of the series are strong field ligands while that on the L.H.S are weak field ligands. Also, strong field ligands cause higher splitting in the d orbitals than weak field ligands.

I− < Br < S2− < SCN < Cl< N3 < F < OH < C2O42− ∼ H2O < NCS ∼ H < CN− < NH3 < en ∼ SO32− < NO2 < phen < CO

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 9: Coordinate Compounds
Q: 17 | Page no. 259

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Solution What is Spectrochemical Series? Explain the Difference Between a Weak Field Ligand and a Strong Field Ligand. Concept: Bonding in Coordination Compounds - Crystal Field Theory (CFT).
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