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Crystal field theory assumes that intera...

Crystal field theory assumes that interaction between the metal ion and ligand is ________.

A

purely covalent

B

purely coordinate covalent

C

polar covalent

D

electrostatic

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The correct Answer is:
D
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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. Select the correct statement about the 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. The hybridization of [NiCl_(2)(PPh_(3))_(2)]" and "[NiCl_(2).(Pme_(3))_(2)] are respectively (consider PPh_(3) a bulkier ligand than Pme_(3) ) :

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 crystal field theory assumes interaction between metal ion and the ligands as a purely electrostatic and ligands are supposed to be point charges. Q. Which of the following match are incorrect?

TARGET PUBLICATION-COORDINATION COMPOUNDS-EVALUATION TEST
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  2. The primary valence of the metal ion in the co-ordination compound Na2...

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  3. Among the following which are ambidenatate ligands ? (i) NO(2)^(-)...

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  4. Which of the following has highest molar conductivity

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  5. Which of the following does not have optical isomer

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  6. The spin only magnetic moment value of Cr(CO)(6) is

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  7. Both geometrical and optical isomerism are exhibited by

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  8. The coordination number and oxidation state of Cr in K(3)[Cr(C(2)O(4))...

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  9. A mixture x containing 0.02 mol of [Co(NH(3))(5) SO(4)]Br and 0.02 mol...

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  10. [Mn2(CO)(10)] is made up of units joined by a Mn-Mn bond.

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  11. Among the following ligands, the positive ion that can act as a ligand...

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  12. The charge number , oxidation number and coordination number of the co...

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  13. A complex is prepared by mixing CoCl3 and Nh3, 0.1 M solution of the c...

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  14. The fraction of chlorine precipitated by AgNO3 solution from [Co(NH3)5...

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  15. Which of the following is a pi-acid ligand?

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  16. In which of the following complexes, the EAN is NOT equal to the atomi...

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  17. [(C6H5)2Pd(SCN)2] and [9C6H5)2Pd(NCS)2] are isomers.

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  18. The IUPAC name of the complex [CrCl2(H2O)4]NO3 is .

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  19. The electronic transition that is responsible for the purple colour of...

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  20. In which of the following complex ions, the magnitude of Delta(@) (CFS...

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