Hi Rangsiman. As far as I know, the electron is currently thought to be a spherical, structureless point-particle to within a radius of at least 10^-18m (about 100 million times smaller than an atom). Nuclei, however do have a non-trivial amount of non-spherical "shape" to them. The shape of a rugby ball can be modeled by an electric quadrupole moment, and nuclei do have non-zero quadrupole moments. However, due to the extremely small size of nuclei (10^-15m) relative to the size of electron orbitals (10^-10m) this is also of minimal energetic consequences. There are many effects in quantum mechanics which are of far greater consequence than the non-spherality of sub-atomic particles which result in observable effects which are orders of magnitude greater, but still don't effect the results of qualitative theories of chemical bonding.