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...Oriental journal of chemistry issn x an international open access peer reviewed research coden ojcheg vol no www orientjchem org pg a simplified method for estimating atomic number and neutrons numbers elements based on period group in the periodic table laith h m al ossmi ali k asadi college engineering university thi qar nassiriya city iraq sumer rifai corresponding author e mail hardmanquanny gmail com http dx doi ojc received december accepted january abstract this has proposed formulas which neutron to any element are determined according position these have been arranged fit with system iupac s main outcome is introduce layout regularity may reflect law more faithfully predictably calculated by were displayed into periods horizontally groups vertically determining dispensing altogether positions at application showed linearity from good agreement separated lanthanum f block lanthanides actinides interruptions sequence increasing addition relationship other blocks also becomes eas...