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'''Dmitri Mendeleev''' was a Siberian chemist who was responsible for developing the [[periodic table of the elements]]. Born in 1834, he was the youngest of at least 14 children. In the late 1860s he began working on the periodic table of the elements. By arranging all of the 63 [[element]]s then known by their [[Atomic mass|atomic weight]]s, he managed to organize them into groups possessing similar properties. When there was no element to fill in a space in the table, he envisioned a new element would one day be found and deduced its properties. Three of those elements were discovered during his lifetime: [[gallium]], [[scandium]], and [[germanium]]<ref>[http://www.rsc.org/education/teachers/learnnet/periodictable/pre16/develop/mendeleev.htm Dmitri Mendeleev], at the site of the [[Royal Society of Chemistry]]</ref>.

'''Dmitri Mendeleev''' was a Siberian chemist who was responsible for developing the [[periodic table of the elements]]. Born in 1834, he was the youngest of at least 14 children. In the late 1860s he began working on the periodic table of the elements. By arranging all of the 63 [[element]]s then known by their [[Atomic mass|atomic weight]]s, he managed to organize them into groups possessing similar properties. When there was no element to fill in a space in the table, he envisioned a new element would one day be found and deduced its properties. Three of those elements were discovered during his lifetime: [[gallium]], [[scandium]], and [[germanium]].<ref>[http://www.rsc.org/education/teachers/learnnet/periodictable/pre16/develop/mendeleev.htm Dmitri Mendeleev], at the site of the [[Royal Society of Chemistry]]</ref>

== References ==

== References ==

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[[Category:Physicists]]

[[Category:Physicists]]

[[Category:Russian People]]

[[Category:Russian People]]

[[Category:Deists]]

[[Category:Deists]]