%0 Journal Article
%T Chemistry in Teaching:<br> Is the Periodic System of the Elements Really Periodic?
%A Raos
%A Nenad
%J -
%D 2016
%R 10.15255/KUI.2015.029
%X Sa£¿etak The periodic system of the elements is periodic, but its periodicity is far from simplicity, i.e. the properties of the elements and their compounds cannot be reduced to the ¡°algebraic, periodic function of the values of atomic weights of the elements¡±, as Mendeleev thought. Besides the well-known trends along the columns (groups) of periodic system, there are also secondary trends such as diagonal behaviour (e.g. similarity of Li to Mg, of Be to Al, and of B to Si), similarities between groups (n) and (n + 10), secondary periodicity inside the group, and knight¡¯s move relationship. These complex relationships are reflected in many attempts at an ¡°ideal¡± periodic table
%K chemistry education
%K PSE
%K periodic system of the elements
%K electronic configuration
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=249506