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Crystal field theory was proposed by H.b...

Crystal field theory was proposed by H.beths (1929) and Van Vleck (1932) and as originally applied to ionic crystals to explain their optical properties and is, therefore, called crystal field theory, however, this theory was applied to the study of coordination compounds in 1950 and this theory accounts for more satisfactory expalnation for the properties of complexes especially colour and magnetism.
What is the hybridisation of `[Ni(H_(2)O)_(6)]^(2+)`?

A

`sp^(3)d^(2)`

B

`d^(2)sp^(3)`

C

`sp^(3)d`

D

`dsp^(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`[Ni(H_(2)O)_(6)]^(2+)`:
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Crystal field theory was proposed by H.beths (1929) and Van Vleck (1932) and as originally applied to ionic crystals to explain their optical properties and is, therefore, called crystal field theory, however, this theory was applied to the study of coordination compounds in 1950 and this theory accounts for more satisfactory expalnation for the properties of complexes especially colour and magnetism. What is the geometry of [Co(NH_(3))_(6)]^(2+) ?

Crystal field theory was proposed by H.beths (1929) and Van Vleck (1932) and as originally applied to ionic crystals to explain their optical properties and is, therefore, called crystal field theory, however, this theory was applied to the study of coordination compounds in 1950 and this theory accounts for more satisfactory expalnation for the properties of complexes especially colour and magnetism. Which of the following complex is paramagnetic in nature ?

Explain the violet colour of the complex [Ti(H_(2)O)_(6)]^(3+) on the basis of crystal field theory.

Valence bond theory for bonding in transition metal complexes was developed by Pauling. From the valence bond point of view, formation of a complex involves reaction between Lewis bases (ligands) and a Lewis acid (metal atom or metal ion) with the formation of coordination covalent (or dative) bonds between them. The model utilizes hybridization of metal s, p and d valence orbitals to account for the observed structures and magnetic properies of complexes. Valence bond theory is able to deal satisfactorily with many stereo chemical and magnetic properies but is has nothing to say about electronic spectra or the reason for the kinetic inertness of chromium (III) and low spin cobalt (III) octahedral complexes. To understand this and more other features of transition metal we must turn to other theories like crystal field theory etc. Pure crystal field theory assumes that the only interaction between the metal ion and the ligands is an electrostatic or ionic one with the ligands being regarded as negative point charges. This theory is quite successful in interpreting many important properties of complexes. Which of the following is correct for the complex [Ti(H_(2)O)_(6)]^(3+) ?

The colour of the coordination compounds depends on the crystal field splitting . What will be the correct order of obsorption of wavelength of light in the visible region, for the comolexes, [Co(NH_(3))_(6)]^(3+) m and [Co(H_(2)O)_(6)^(3+) ?