A detailed investigation of the atomic structure and radiative parameters involving the lowest states within the 6p, 6p6d, 6p7s, 6p7p and 6p7d configurations of neutral polonium is reported in the present paper. Using different physical models based on the pseudo-relativistic Hartree–Fock approach, the influence of intravalence, core–valence and core–core electron correlation on the atomic para...