Advertisements
Advertisements
Question
Explain the difference between a weak field ligand and a strong field ligand.
Solution
Sr. No. | Weak field ligand | Strong field ligand |
1. | Those ligands whose crystal field splitting energy (CFSE), Δ0 has a low value are called weak field ligands. | Those ligands whose crystal field splitting energy, Δ0 has a high value are called strong field ligands. |
2. | Due to weak field ligands, there is no pairing of electrons and they form high-spin complexes. | Due to strong field ligands, there is pairing of electrons and they form low-spin complexes. |
RELATED QUESTIONS
On the basis of crystal field theory, write the electronic configuration for d4 ion if ∆0 < P.
Draw the structures of the following :
(1) XeF6
(2) IF7
\[\ce{CuSO4 . 5H2O}\] is blue in colour while \[\ce{CuSO4}\] is colourless. Why?
Match the complex ions given in Column I with the hybridisation and number of unpaired electrons given in Column II and assign the correct code:
Column I (Complex ion) | Column II (Hybridisation, number of unpaired electrons) |
A. \[\ce{[Cr(H2O)6]^{3+}}\] | 1. dsp2, 1 |
B. \[\ce{[Co(CN)4]^{2-}}\] | 2. sp3d2, 5 |
C. \[\ce{[Ni(NH3)6]^{2+}}\] | 3. d2sp3, 3 |
D. \[\ce{[MnF6]^{4-}}\] | 4. sp3, 4 |
5. sp3d2, 2 |
Using crystal field theory, draw energy level diagram, write electronic configuration of the central metal atom/ion and determine the magnetic moment value in the following:
\[\ce{[FeF6]^{3-}, [Fe(H2O)6]^{2+}, [Fe(CN)6]^{4-}}\]
The magnitude of CFSE depends upon ______
What is the difference between a weak field ligand and a strong field ligand?
The correct order of intensity of colors of the compounds is ______.
Consider that d6 metal ion (M2+) forms a complex with aqua ligands and the spin only magnetic moment of the complex is 4.90 BM. The geometry and the crystal field stabilization energy of the complex is:
On the basis of crystal field theory, write the electronic configuration for d4 with a strong field ligand for which Δ0 > P.