Mendeleev, a Russian chemist, essentially invented the Periodic Table!
His 1869 table looked like an ad hoc chart. However, he used it to express a deep scientific truth he had uncovered: the periodic law. Mendeleev had discovered profound familial relationships among the 63 known chemical elements of the time, in that they exhibited similar properties at regular intervals (or periods) when arranged in order of their atomic weights. Indeed, this logical presentation enabled Mendeleev to predict the existence of elements that had not yet been discovered!
The title, translated from Russian, reads: “Draft of system of elements: based on their atomic masses and chemical characteristics.”
This was a significant breakthrough in the history of chemistry. Starting in 1869, each chemical element had its number and fixed position in the Periodic Table. Therefore, it became possible to predict the element’s behavior: how it would react with other elements, what kind of compounds it would form, and the type of physical properties it would possess.
Here’s a comprehensive biography of Mendeleev:
chemistrygod.com/dmitri-mendeleev
Here are THREE excellent non-Wikipedia articles that provide a historical account:
www.aip.org/history-programs/niels-bohr-library/ex-libris...
www.asbmb.org/asbmb-today/science/020721/a-brief-history-...
www.sciencenews.org/article/periodic-table-history-chemic...
Tags: Chemistry Bioknowlogy STEM elements Periodic Table Science new trending Mendeleev inorganic chemistry organic chemistry taxonomy
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Source:
pubchem.ncbi.nlm.nih.gov/periodic-table/
Tags: Chemistry Bioknowlogy STEM elements Periodic Table Science new trending Mendeleev inorganic chemistry organic chemistry taxonomy
© All Rights Reserved
Tags: Chemistry Bioknowlogy STEM elements Periodic Table Science new trending Mendeleev inorganic chemistry organic chemistry taxonomy
© All Rights Reserved
In June 2016, the four newest members of the Periodic Table were officially named. They had been discovered a few years earlier. This brought the total to 118 elements, and none have been added since.
IUPAC (the International Union of Pure and Applied Chemistry) has specific rules about how elements can be named. This amazing chart examines the origins of the names of all 118 elements!
Source:
www.compoundchem.com/2016/06/09/element-names/
Tags: Chemistry Bioknowlogy STEM elements Periodic Table Science new trending Mendeleev inorganic chemistry organic chemistry taxonomy
© All Rights Reserved
Tags: Chemistry Bioknowlogy STEM elements Periodic Table Science new trending Mendeleev inorganic chemistry organic chemistry taxonomy
© All Rights Reserved