(B) The student is expected to research and describe the historical development of the atomic theory.
![printable periodic table chemistry printable periodic table chemistry](https://1.bp.blogspot.com/_dLMANDp26Xs/TU4KwOpwH8I/AAAAAAAAAOQ/DwmN6b8jyoM/s1600/Periodic_table.gif)
Copy and paste the following URL into your browser, then click the tabs at the top and explore each section. The Royal Society of Chemistry's interactive periodic table features history, Alchemy, podcasts, videos and data trends across the periodic table. Royal Society of Chemistry Periodic Table Royal Society of Chemistry - History of the Periodic Table Mendeleev denied the existence of atoms.Mendeleev knew the information the best and printed it in a textbook on Chemistry. Six others worked on the periodicity of elements.Lanthanides and Actinides plus noble gases were not.
![printable periodic table chemistry printable periodic table chemistry](https://i5.walmartimages.com/asr/eb61b593-b871-4d60-88c6-f5350365eb99.2cdc1cd35be54e4b4bdc4c33323866e7.jpeg)
Alkali metals, Alkaline earth metals, Transition metals, Halogens, Metals, Metalloids, Gases and nonmetals were known at Mendeleev's time.Mendeleev noticed gaps in the elements weights and realized that there were undiscovered elements.60 elements are known at the time and are laid out according to atomic weight and reactivity.Demitri Ivanovich Mendeleev studied elements for the idea of the periodic table.Periodic Table - Crash Course in Chemistry