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Answer in brief. What are strong field and weak field ligands ? Give one example of each. - Chemistry

Short Note

Answer in brief.

What are strong field and weak field ligands ? Give one example of each.

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Solution

i. Strong field ligands: Those ligands which cause larger splitting of d orbitals and favour pairing of electrons are called strong field ligands. Strong field ligands contain C, N, and P as donor atoms.

e.g. CN , NCS , CO, NH3, EDTA, en (ethylenediammine).

ii. Weak field ligands: Those ligands which cause lower splitting of d orbitals i.e., ∆° parameter is smaller compared to the energy required for the pairing of electrons are called weak field ligands. Weak field ligands contain halogen, O, and S as donor atoms.

e.g. F , Cl , Br , I, SCN, `"C"_2"O"_4^{2-}`.

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APPEARS IN

Balbharati Chemistry 12th Standard HSC Maharashtra State Board
Chapter 9 Coordination Compounds
Exercise | Q 3.09 | Page 208
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