Advertisements
Advertisements
Question
Discuss the nature of bonding in the following coordination entity on the basis of valence bond theory:
[Co(C2O4)3]3−
Advertisements
Solution
Electronic configuration of Co (Z = 27) = [Ar] 3d74s2
Electronic configuration of Co3+ = [Ar] 3d64s0
\[\ce{C2O^{2-}_4}\] is a strong field ligand due to which electrons are paired.
Oxalate is a weak field ligand. Therefore, if cannot cause the pairing of the 3d orbital electrons. As there are 6 igands, hybridization has to be ether sp3d2 hybridization.
[Co(C2O4)3]3− involves d2sp3 hybridization, forms an octahedral, inner orbital complex as per valence bond theory.
Hence, it is clear that [Co(C2O4)3]3− is a diamagnetic and octahedral complex.
RELATED QUESTIONS
Discuss the nature of bonding in the following coordination entity on the basis of valence bond theory:
[Fe(CN)6]4−
[Cr(NH3)6]3+ is paramagnetic while [Ni(CN)4]2− is diamagnetic. Explain why?
Discuss the nature of bonding in the following coordination entity on the basis of valence bond theory:
[FeF6]3−
Write the hybridisation and number of unpaired electrons in the complex `[CoF_6]^(3-)`. (Atomic No. of Co = 27)
[NiCl4]2- is paramagnetic while [Ni(CO)4] is diamagnetic though both are tetrahedral. Why? (Atomic no. Ni = 28)
Using valence bond theory, explain the following in relation to the complexes given below:
\[\ce{[Mn(CN)6]^{3-}}\]
(i) Type of hybridisation.
(ii) Inner or outer orbital complex.
(iii) Magnetic behaviour.
(iv) Spin only magnetic moment value.
Using valence bond theory, explain the following in relation to the complexes given below:
\[\ce{[Cr(H2O)6]^{3+}}\]
(i) Type of hybridisation.
(ii) Inner or outer orbital complex.
(iii) Magnetic behaviour.
(iv) Spin only magnetic moment value.
Using valence bond theory, explain the following in relation to the complexes given below:
\[\ce{[FeCl6]^{4-}}\]
(i) Type of hybridisation.
(ii) Inner or outer orbital complex.
(iii) Magnetic behaviour.
(iv) Spin only magnetic moment value.
When the hybridization state of carbon changes from sp3 to sp2 and finally to sp, the angle between hybridized orbital will
Which of the following methods is used for measuring bond length?
In Fe(CO)5, the Fe – C bond possesses
Using valence bond theory, predict the hybridization and magnetic character of the following:
[CoF6]3– [Atomic number of Co = 27]
According to the valence bond theory, the hybridization of central metal atom is dsp2 for which one of the following compounds?
The magnetic moment of [NiCl4]2− is ______.
[Atomic number: Ni = 28]
[Ni(CO)4] has tetrahedral geometry while [Ni(CN)4]2− has square planar, yet both exhibit diamagnetism. Explain.
[Atomic number: Ni = 28]
During chemistry class, a teacher wrote \[\ce{[Ni(CN)4]^2-}\] as a coordination complex ion on the board. The students were asked to find out the magnetic behaviour and shape of the complex. Pari, a student, wrote the answer paramagnetic and tetrahedral whereas another student Suhail wrote diamagnetic and square planer.
Evaluate Pari’s and Suhail’s responses.
