Question: what is common between dxy and dx2-y2?
Answer: In dz2 orbital , there are 2 lobes which lie on the z-axis i.e. one lobe on the +ve z-axis and other on the -ve z-axis. ... In dx2-y2 orbital , all the four lobes lie on the co-ordinate axes. In dz2 orbital , there are 2 lobes which lie on the z-axis i.e. one lobe on the +ve z-axis and other on the -ve z-axis.