Advertisements
Advertisements
प्रश्न
Discuss the nature of bonding in the following coordination entity on the basis of valence bond theory:
[CoF6]3−
Advertisements
उत्तर
Co(27) = [Ar] 3d74s2
Co3+ = [Ar] 3d64s0
F− being a weak field ligand cannot pair electrons.
The oxidation state of cobalt in the complex is +3. Its electronic configuration is [Ar] 3d6. F− ion provides a weak ligand field and is unable to pair up the unpaired electrons of the 3d orbitals.
Hence, six equivalent hybrid orbitals are obtained by mixing of one 4s, three 4p and two 4d orbitals. Six empty sp3d2 hybrid orbitals are filled up by six electron pairs provided by F− ion. The highly paramagnetic nature of the complex further confirms the presence of four unpaired electrons.
As d-orbitals of the outermost shell participate in hybridisation, the complexes thus formed are called outer orbital complexes.
Hence, [CoF6]3− is a paramagnetic and octahedral complex.
संबंधित प्रश्न
[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:
[Co(C2O4)3]3−
Explain the geometry of `[Co(NH_3)_6]^(3+)` on the basis of hybridisation. (Z 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:
\[\ce{[Co(NH3)6]^{3+}}\]
(i) Type of hybridisation.
(ii) Inner or outer orbital complex.
(iii) Magnetic behaviour.
(iv) Spin only magnetic moment value.
The type of hybridization involved in Octahedral complexes is ______.
How many radial nodes for 3p orbital?
When the hybridization state of carbon changes from sp3 to sp2 and finally to sp, the angle between hybridized orbital will
As the s-character of hybridised orbital increases, the bond angle
What is the no. of possible isomers for the octahedral complex [Co(NH3)2(C2O4)2]?
In Fe(CO)5, the Fe – C bond possesses
Valence bond theory is based on the assumption that the bonds formed between the metal ions and ligands are ______
Using Valence bond theory, explain the following in relation to the paramagnetic complex [Mn(CN)6]3−
- type of hybridization
- magnetic moment value
- type of complex – inner, outer orbital complex
Using valence bond theory, predict the hybridization and magnetic character of the following:
[CoF6]3– [Atomic number of Co = 27]
Write the hybridisation and magnetic behaviour of [CoF6]3−.
[Given: Atomic number of Co = 27]
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]
The geometry and magnetic behaviour of the complex [Ni(CO)4] are ______.
