In this chapter we have studied rotational motion in two and three dimensions. The operators for energy, angular momentum and the z component of angular momentum are constructed in Cartesian (x,y,z), polar (r, ) and spherical polar (r, , ) coordinates and the solutions, which are functions of and are obtained .
The quantization of and z occurs due to the requirement that the wavefunction has to be single valued. These solutions will be used for obtaining the solution of the hydrogen atom to be studied in the next chapter.
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) and spherical polar (r, 
, 
) coordinates and the solutions, which are functions of 
and 
are obtained . 
and 
z occurs due to the requirement that the wavefunction has to be single valued. These solutions will be used for obtaining the solution of the hydrogen atom to be studied in the next chapter. 
