Home
Class 12
CHEMISTRY
Why are different colours observed in oc...

Why are different colours observed in octahedral and tetrahedral complex for the same metal and same ligands?

Text Solution

Verified by Experts

Extent of splitting of d-orbitals is different in octahedral and tetrahedral field. CFSE in octahedral and tetrahedral closely related as:
`Delta_(t)=(4/(9))Delta_(0)`
where,
`Delta_(t)` = crystal field splitting energy in tetrahedral field
`Delta_(0)` = crystal field splitting energy in octahedral field
Wavelength of light and CFSE are related to each other by formula
`Delta_(0)=E=(hc)/(lamda)rArrEprop1/(lamda)`
so, higher wavelength of light is absorbed in octahedral complexes than tetrahedral complexes foe same metal and ligands. Thus, different colours are observed.
Promotional Banner

Topper's Solved these Questions

  • COORDINATION COMPOUNDS

    ARIHANT PUBLICATION|Exercise QUESTIONS FOR PRACTICE Part II Short Answer Type II Questions 3 Marks |12 Videos

  • COORDINATION COMPOUNDS

    ARIHANT PUBLICATION|Exercise QUESTIONS FOR PRACTICE Part II Long Answer Type Questions 7 Marks |9 Videos

  • COORDINATION COMPOUNDS

    ARIHANT PUBLICATION|Exercise QUESTIONS FOR PRACTICE Part II Very Short Answer Type Questions 1 Mark |6 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    ARIHANT PUBLICATION|Exercise CHAPTER PRACTICE (LONG ANSWER TYPE QUESTIONS) |2 Videos

  • D-BLOCK ELEMENTS

    ARIHANT PUBLICATION|Exercise Chapter practice (Long answer type questions)|2 Videos

Similar Questions

Explore conceptually related problems

Write the difference between Octahedral and Tetrahedral.

Why are low spin tetrahedral complexes not formed?

In one type of crystal of an element there are more octahedral voids than tetrahedral ones while in another type there are more tetrahedral voids than the octahedral ones. Which of these two crystals has higher density and why?

Why is geometrical isomersim not possible for tetrahedral complexes?

Fill in the blanks : In octahedral complex with d^8 metal ion configuration the CFSE is ………