150th anniversary of Mendeleev’s Periodic Table












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            * Interactive tableau launched on 150th anniversary of Mendeleev’s Periodic Table
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            The installation, which includes samples of the elements (with the exception of radioactiv

            behind glass, commemorates 150 years since Russian chemist Dimitri Mendeleev published his
            table, in which he arranged all of the elements then known (63 compared to today’s 108 or 
            order of their relative atomic mass and chemical similarities. The interactive board is al

            Mendeleev’s cooperation with Czech chemist Bohuslav Brauner.

            The new 3.5 metre wide interactive board coincides with UNESCO celebrations marking 2019 a

            International Year of the Periodic Table of Chemical Elements.


            In his day, Mendeleev realised that chemical and physical properties of elements were tied
            mass in a ‘periodic way’ and arranged them in vertical columns so that groups of elements 
            properties were located together. This method had gaps in the table but the Russian chemis

            the gaps represented elements that had not yet been discovered. He was able to closely pre
            mass of missing elements as well as to largely predict their properties.
            At the launch of the installation in Prague, Dean Jiří Zima credited Mendeleev’s immense c

            cementing chemistry as an exact science.
            Elements on display in the tableau include 24 karat gold, rubidium, or carbon.