[Capital]

The question:



My work:



I've drew the cross section of the orbital 6p_z²

The green lines represent radial nodes (there are three of them), red represents positive wavefunction, blue represents negative wavefunction.

When the wavefunction is squared, the value would always be positive.

phi is the angle between the x axis and the reflection of the vector on the xy axis

I don't know how to plot the graph of phi and the wavefunction squared because my axis can be z and y or z and x (and not x and y). So how can I find the relationship?

The answer says it is a positive straight line but I don't see how.

Thanks for any help.