Multiple choice

For [Ti(H2O)6]3+ maximum absorption is due to d-d transition found at 20000 cm-1. Calculate the crystal field stabilization energy for the complex ions.

    • 20000 cm-1

  2. 4/9 x 20000 cm-1

  3. 8000 cm-1
    • 8000 cm-1

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct, because the octahedral high spin complex Ti exhibits trivalent state. It belongs to the 3d1 orbital which split in to t2g and eg set. The electron is istributed in 1t2g and 0eg. Hence,  CFES = [- 0.4p + 0.6q] Dq + mP, here p = Number of electron in t2g, q = Number of electron in eg, set Dq = 20000 cm-1 m = Number of paired electron, mean pairing energy. Calculation - [- 0.4 x 1 + 0.6 x 0] 20000 cm-1 + 0 = - 0.4 x 20000 cm-1 = - 8000 cm-1

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