The hybridisation and number of unpaired electrons in are:

Question

The hybridisation and number of unpaired electrons in  are:

Canvas Classes · Accepted Answer

Strategy:
 Identify if the ligand is weak field (high spin) or strong field (low spin), then apply to the metal's electron configuration.

Step 1: Analyze Metal and Ligand
Complex: .
 configuration: .
 is a weak field ligand, so . Electrons will not pair up beyond the minimum required.

Step 2: Distribute electrons
The 6 electrons occupy orbitals as .
Number of unpaired electrons = 4.

Step 3: Hybridisation
Since inner  orbitals are not empty,  orbitals are used.
Hybridisation:  (outer orbital c

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