In the formation of octahedral complex , ligands approach towards ________ and ______ orbital of central metal

Options

A. `d_(xy),d_(x^(2)-y^(2))`
B. `d_(x^(2)-y^(2)),d_(z^(2))`
C. `d_(xy),d_(yz)`
D. `d_(z^(2)),d_(xz)`

Answer

To answer the question regarding the formation of an octahedral complex and the specific d orbitals that ligands approach, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Octahedral Complexes**:
- In coordination chemistry, an octahedral complex is formed when six ligands surround a central metal ion. The arrangement of ligands around the metal ion creates an octahedral geometry.

2. **Identifying d Orbitals**:
- The d orbitals available in transition metals include:
- \(d_{xy}\)
- \(d_{yz}\)
- \(d_{xz}\)
- \(d_{x^2-y^2}\)
- \(d_{z^2}\)

3. **Ligands Approach the Metal Ion**:
- In an octahedral complex, ligands approach the central metal ion along the axes of the coordinate system. This means they approach towards the orbitals that are aligned along these axes.

4. **Determining the Relevant Orbitals**:
- The orbitals that lie along the axes (internuclear axis) are:
- \(d_{x^2-y^2}\) (which lies along the x and y axes)
- \(d_{z^2}\) (which lies along the z axis)
- These orbitals are preferred for bonding because the ligands interact more strongly with these orbitals due to their orientation.

5. **Conclusion**:
- Therefore, the ligands approach towards the \(d_{x^2-y^2}\) and \(d_{z^2}\) orbitals of the central metal ion in the formation of an octahedral complex.

### Final Answer:
In the formation of an octahedral complex, ligands approach towards **\(d_{x^2-y^2}\)** and **\(d_{z^2}\)** orbitals of the central metal.

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