Question

For the following crystal field diagrams, label each as low spin, high spin, or cannot tell. Explain your answers.

Short answer

From the crystal field diagram,

1. Low spin

2. Low spin

3. High spin

Step-by-step solution

Step:1

High spin complex- A complex in which d electrons remain unpaired is called high spin complex.

Low spin complex- A complex in which all the d electrons are paired is called low spin complex.

Step:2

The possibility of low or high spin complex exist for ${\mathrm{d}}^4\mathrm{to}{\mathrm{d}}^7$ions. Whether a complex will be low or high spin depends on the nature of the ligand as follows

Strong field ligand – Low spin complex

Weak field ligand – High spin complex