John Daltonís Periodic Tables

 

††††††††††† In 1803, the English school teacher and part-time scientist, John Dalton published his first list of elements when he printed his atomic theory and his early gas law work. His original list showed only five elements: hydrogen, oxygen, azote (nitrogen), carbon and sulfur, along with their atomic weights. Dalton attempted to create a system to symbolize the elements, making them easier to write them down quickly. Though his system was replaced by a system of only letters proposed by the Swedish JŲns Berzelius shortly after Daltonís first volume of his second major work was published in 1808, his newest work included more elements and even compounds.Daltonís second volume did not come out until 1827 and contained an even longer list of elements.

 

Daltonís First list of elements, published in 1803 with other work, contained only five elements, a far cry from the 100+ that we have today.

 

Daltonís second list of elements was published in the first volume of a work in 1808. This work included twenty elements, with their [often incorrect] atomic masses (above) and some combinations of the elements (below).

 

When the second volume of his work came out in 1827, the list of elements had grown to 36.His symbols may look strange since they were not easy to remember and have not been used since the work was published.