The hybrisation of Co in [Co(H2O)6]3+is :a)d2sp3b)dsp2c)dsp3d)spd3Correct answer is option 'A'. Can you explain this answer?

Question

Answer

In this complex compound the total charge is +3 as H₂O is a neutral compound so the oxidation state of cobalt is +3 and the electronic configuration of Co is 3d⁷ 4s². So, Co(+3)=4d6 and H₂O is a weak ligand so there is no pairing of electron. So,4s 4p³ and 4d² orbital make hybrid orbital to have a hybridization of d²sp³.

Answer

C

Answer

Because h20 is weak field ligand and in this case we use outer orbital complexes

Answer

Hybridization of Co in [Co(H2O)6]3+

Introduction:
Hybridization is the concept that explains the mixing of atomic orbitals to form new hybrid orbitals. These hybrid orbitals are used to describe the bonding in molecules. The hybridization of the central atom in a complex is determined by the number of ligands and the geometry of the complex.

Explanation:
In the given complex, [Co(H2O)6]3+, the cobalt (Co) atom is bonded to six water (H2O) ligands. To determine the hybridization of Co, we need to consider the number of sigma bonds and lone pairs around the central atom.

Step 1: Determine the number of sigma bonds and lone pairs:
In [Co(H2O)6]3+, each water molecule (H2O) forms a sigma bond with the cobalt atom. Therefore, there are six sigma bonds in total.

Step 2: Determine the steric number:
The steric number is the sum of the number of sigma bonds and lone pairs around the central atom. In this case, the steric number is 6 (6 sigma bonds).

Step 3: Determine the hybridization:
The hybridization of the central atom is determined by the steric number:
- For steric number 2, the hybridization is sp.
- For steric number 3, the hybridization is sp2.
- For steric number 4, the hybridization is sp3.
- For steric number 5, the hybridization is sp3d.
- For steric number 6, the hybridization is sp3d2.

In [Co(H2O)6]3+, the steric number is 6, indicating that the hybridization of the cobalt atom is sp3d2. Therefore, the correct answer is option 'C'.

Conclusion:
The hybridization of Co in [Co(H2O)6]3+ is sp3d2.

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