Question

Lanthanides are much more paramagnetic than transition element's why.​

Answer 1

Answer:

These elements are different from the main group elements in the fact that they have electrons in the f orbital. After Lanthanum, the energy of the 4f sub-shell falls below that of the 5d sub-shell. This means that the electron start to fill the 4f sub-shell before the 5d sub-shell

Answer 2

The magnetic properties of the lanthanides are due to the electrons in the partial filled 4f shell. The magnetic properties of the first-row transition metals are due to the electrons in the partial filled 3d shell. There are two important differences between the 3d shell and the 4f shell.

The first difference is that d electrons have much greater overlap with their neighboring atoms than f electrons do. This means that d bands are not as localized as f bands are.