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Q3. Give the names of strong field ligands and weak field ligands .

@mausumi,

The spectrochemical series indicating weak and strong field ligand is as follow:

I− < Br− < S2− < SCN− < Cl− < NO3− < N3− < F− < OH− < C2O42− < H2O < NCS− < CH3CN < py  < NH3 < en  < bipy < phen  < NO2− < PPh3 < CN− < CO

Hi all,

Good effort! Keep it up!

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 weak field ligands-> water and halogens

strong field ligands-> rest all.

  • -1

there is a list given in the textbook of ligands in order of their ligating strengths. Ex: Strong Ligands : CN-

  Weak Ligands : H2O

  • -5

 cn-, co & oh , h20

  • 1

ist two strong n last two are week respt.

  • -1

 Weak Field Ligand : F- , Cl- , Br- , I- , H2O .

Except all these is Strong Field Ligand.

  • -5

Except all these weak field ligand ; ligand will be strong field ligand.

  • -4

halogen ions , H2O are weak field . rest all ligand are strong field field.

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