Find < px >,< p > and < p2 > for the 1s electron ofa hydrogen atom.

 

i am tried the solution but momentum operators Differential for x or y or z and the wave equation depends on the r !!

 

You would need to express the momentum operator in terms of spherical coordinates. Which means you need the gradient in terms of spherical coordinates. http://mathworld.wolfram.com/SphericalCoordinates.html

Thank you very much

Clearer idea