3dOrbital

figure1 = ParametricPlot3D[
{dz2[θ,φ] Sin[θ] Cos[φ],
 dz2[θ,φ] Sin[θ] Sin[φ], 
 dz2[θ,φ] Cos[θ]},
 {θ,0, π}, {φ, -π, π}, 
ViewPoint->{1.696, 1.670, 0.857},PlotPoints->25,AspectRatio -> Automatic,PlotLabel->"3d\!\(z\^2\)",Boxed->False,Axes->False,PlotRange->{{-.65,.65},{-.65,.65},{-.65,.65}} ];

    Notice that the orbital aligns along the z-axis.  Look at the middle section in more detail, by considering φ from 0 to π.

Problem 4. - Plot the fz2 orbital associated to l=3.
Hint: you may want to define the orbital as the absolute value of the Spherical Harmonic.  To do this use the Abs[function] command.  Why?