Dmitri Mendeleev
Dimitri Ivanovich Mendeleev[1] (1834-1907) [MEN-de-LAY-ev), Russian chemist, discovered that ordering the then known (1869) chemical elements, sixty-three in number, according to their increasing atomic weights, revealed a repeated cycle of recurrence, every seven elements, of their chemical and physical properties — the properties recurred as functions of the elements' atomic weights — and to permit the prediction of subsequently experimentally established revised values for the atomic weights of certain elements and, importantly, prediction of the existence of yet undiscovered elements with atomic weights and properties required to fill in the missing elements in his ordering scheme, a scheme which chemists subsequently referred to as the periodic table of the chemical elements (Mendeleev and Jensen 2002).
Introduction
When, within a few years of the announcement of Mendeleev's ordering scheme in 1869, chemists discovered three new chemical elements (gallium, scandium, germanium) that accorded with his prediction of their atomic weights and properties, and with confirmation of his revised atomic weights for specified elements, Mendeleev's contemporaries worldwide recognized his discovery as a natural law of chemistry transcending taxonomy, and as a fundamental contribution to the understanding of the nature of physical reality, leading his successors, notably the 20th century Danish physicist, Niels Bohr, to formulate a theory of atomic structure and its regularities that explained Mendeleev's periodic law and the deviations to it discovered with the ever expanding discovery of new elements, in particular, the rare earth elements (Brush 1996).
As the theory of evolution ineluctably evokes the name of Charles Darwin, and the theory of relativity the name of Albert Einstein, the periodic law of the chemical elements evokes the name of Dimitri Mendeleev.
Mendeleev's life and work and 'world' he lived in
Notes
- ↑ Note: Given name often transliterated also as 'Dmitri','Dmitry', and 'Dmitriy'; family name also often transliterated 'Mendeleyev', sometimes 'Mendeleef', and 'Mendeleeff'.
References
- Babaev EV. (2009) Dmitriy Mendeleev: A Short CV, and A Story of Life.
- Brush SG. (1996) “The Reception of Mendeleev's Periodic Law in America and Britain”. ISIS 87(4): 595-628.
- After spending considerable time perusing the crumbling pages of late nineteenth-century chemistry journals and textbooks, I have confirmed the traditional account: Mendeleev's periodic law attracted little attention (at least in America and Britain) until chemists started to discover some of the elements needed to fill gaps in his table and found that their properties were remarkably similar to those he had predicted. The frequency with which the periodic law was mentioned in journals increased sharply after the discovery of gallium; most of that increase was clearly associated with Mendeleev's prediction of the properties of the new element (see Table 1), although in many cases it is difficult to prove a causal relation since the authors do not mention the prediction. By the late 1880s, most textbooks published in the United States and Britain discussed the periodic law to some extent (see Table 2)
- Morris R. (200x) The Last Sorcerers The Path From Alchemy to the Periodic Table. Washington, D.C.: Joseph Henry Press. ISBN 0-309-08905-0. | PDF download. | Google Books preview.
- "As the field (chemistry) slowly progressed, another pioneer was to emerge almost 100 years later. Dimitri Mendeleev, an eccentric genius who cut his flowing hair and beard but once a year, sought to answer the most pressing questions that remained to chemists: Why did some elements have properties that resembled those of others? Were there certain natural groups of elements? And, if so, how many, and what elements fit into them? It was Mendeleev who finally addressed all these issues when he constructed the first Periodic Table in the late 1800s." | source of quote.
- Scerri ER. (2007) Mendeleev. In: The Periodic Table: Its Story and Its Significance.Chapter 4, pp. 101-121. Oxford: Oxford University Press. ISBN 9780195305739. | Google Books full-text Chapter 4 online.
- "An important part of this investigation [this chapter] consists of trying to understand Mendeleev's conception of the nature of chemical elements. This issue forms the basis of what is perhaps the most philosophical aspect of the periodic system..."