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Explain the violet color of the complex \[{{[\mathbf{Ti}{{({{\mathbf{H}}_{\mathbf{2}}}\mathbf{O})}_{\mathbf{6}}}]}^{\mathbf{3}+}}~\] on the basis of crystal field theory.
Explain the violet color of the complex \[{{[\mathbf{Ti}{{({{\mathbf{H}}_{\mathbf{2}}}\mathbf{O})}_{\mathbf{6}}}]}^{\mathbf{3}+}}~\] on the basis of crystal field theory.
CBSE | Chemistry | Class 12 | Coordination Compounds | NCERT
Explain the violet color of the complex \[{{[\mathbf{Ti}{{({{\mathbf{H}}_{\mathbf{2}}}\mathbf{O})}_{\mathbf{6}}}]}^{\mathbf{3}+}}~\] on the basis of crystal field theory.

The degree/level of association among the species involved in a state of equilibrium determines the stability of a coordination molecule in a solution.

The formation constant or stability constant can be used to express stability numerically.

M + 3L   ⇔  ML3

Stability constant , β =  [ML3]/[M] [L]3

The greater the value of β, the stronger is the metal-ligand bond.

Charge on the central metal ion – the higher the charge, the more stable the complex.

( 1 ) Charge on the central metal ion – the higher the charge, the more stable the complex.

( 2 ) Ligand nature – chelating ligands result in a more stable compound.

( 3 ) The ligand’s basic strength—the more basic a ligand is, the more stable its complex is.

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