Pymol: sphere representation and ionic radii

I just want to point out and reiterate an old forum message about using PyMOL to display ions as spheres. The spheres representation shows the van der Waals radius of an atom. Apparently PyMOL stores the nonionic radii by default, 1.73 A for Mg, for example, rather than 0.71 A for Mg++. If you look up the desired ionic radius:

https://www.webelements.com/nickel/atom_sizes.html

You can set them in PyMOL using the alter command, to obtain a more appropriate picture:

 PyMOL> alter (elem Ni), vdw=0.83
 PyMOL> rebuild