Question

how many nodal planes are there in dz2 orbital ??? ( most of the authors wrote 2 , bt sme renowned experts wrote ZERO ) so m confused between zero n two ???

Answer 1

Answer:

Nodal plane is the region where probability of finding the electron is zero.

According to correct concept and various observations :

The dz2 orbital has two main region of electron density along the z-axis and some of the electron density is also present in X-Y plane. Thus its has two cone shaped nodal plane as you can see in above diagram thus also called Nodal Cones.