FACTOID # 68: Canada lays claim to more water than any other nation.
 
 Home   Encyclopedia   Statistics   Countries A-Z   Flags   Maps   Education   Forum   FAQ   About 
 
 
 
WHAT'S NEW
RECENT ARTICLES
More Recent Articles »
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Dmitri Mendeleev
Portrait of Dmitri Mendeleev by Ilya Repin
Portrait of Dmitri Mendeleev by Ilya Repin

(Russian: Дми́трий Ива́нович Менделе́ев, Dmitri Ivanovich Mendeleev listen ) (8 February [O.S. 27 January] 1834 in Tobolsk2 February [O.S. 20 January] 1907 in Saint Petersburg), was a Russian chemist and inventor. He is credited as being the creator of the first version of the periodic table of elements. Unlike other contributors to the table, Mendeleev predicted the properties of elements yet to be discovered. Image File history File links Download high resolution version (551x707, 27 KB)Repins portrait of Mendeleyev (1885) This image is in the public domain because its copyright has expired in the United States and those countries with a copyright term of life of the author plus 100 years or... Image File history File links Download high resolution version (551x707, 27 KB)Repins portrait of Mendeleyev (1885) This image is in the public domain because its copyright has expired in the United States and those countries with a copyright term of life of the author plus 100 years or... Ilyá Yefímovich Répin (Илья́ Ефи́мович Ре́пин) (August 5, 1844 (Julian calendar: July 24) – September 29, 1930) was a leading Russian painter and sculptor of the Peredvizhniki artistic... Image:Ru-Dmitri Mendeleev. ... is the 39th day of the year in the Gregorian calendar. ... Old Style or O.S. is a designation indicating that a date conforms to the Julian calendar, formerly in use in many countries, rather than the Gregorian calendar, currently in use in most countries. ... Year 1834 (MDCCCXXXIV) was a common year starting on Wednesday (link will display the full calendar) of the Gregorian Calendar (or a common year starting on Monday of the 12-day slower Julian calendar). ... View of Tobolsk in the 1910s Tobolsk (Russian: ; Tatar: Tubıl) is a historic capital of Siberia, now an ordinary town in Tyumen Oblast, Russia. ... is the 33rd day of the year in the Gregorian calendar. ... Old Style or O.S. is a designation indicating that a date conforms to the Julian calendar, formerly in use in many countries, rather than the Gregorian calendar, currently in use in most countries. ... Year 1907 (MCMVII) was a common year starting on Tuesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Monday of the 13-day-slower Julian calendar). ... Saint Petersburg (Russian: Санкт-Петербу́рг, English transliteration: Sankt-Peterburg), colloquially known as Питер (transliterated Piter), formerly known as Leningrad (Ленингра́д, 1924–1991) and... For other uses, see Chemistry (disambiguation). ... For other uses, see Inventor (disambiguation). ... The Periodic Table redirects here. ... The periodic table of the chemical elements A chemical element, or element, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ...

Contents

Life

Dmitri Mendeleev was born in Tobolsk, Siberia, Russia on February 8, 1834, to Ivan Pavlovich Mendeleev and Maria Dmitrievna Mendeleeva (born Kornilieva). His grandfather was Pavel Maximovich Sokolov, a Russian priest. Ivan, along with his brothers, obtained new family names while attending Tver theological seminary.[1] Tvers coat of arms depicts grand ducal crown placed on a throne. ...


Mendeleev was the 17th child of 17 total, but the exact number differs among sources.[2] At the age of 13, after the passing of his father and the destruction of his mother's factory by fire, Mendeleev attended the Gymnasium in Tobolsk. A gymnasium (pronounced with or, in Swedish, as opposed to ) is a type of school providing secondary education in some parts of Europe, comparable to English Grammar Schools and U.S. High Schools. ...


In 1849, the now poor Mendeleev family relocated to St. Petersburg, where he entered the Main Pedagogical Institute in 1850. After he graduated, an illness that was diagnosed as tuberculosis caused him to move to the Crimean Peninsula on the northern coast of the Black Sea in 1855. While there he became chief science master of the Simferopol gymnasium №1. He returned with fully restored health to St. Petersburg in 1857. Saint Petersburg  listen (Russian: Санкт-Петербу́рг, English transliteration: Sankt-Peterburg), colloquially known as Питер (transliterated Piter), formerly known as Leningrad (Ленингра́д, 1924–1991... Categories: Russia-related stubs | Universities and colleges in Russia | Saint Petersburg ... Tuberculosis (abbreviated as TB for tubercle bacillus or Tuberculosis) is a common and deadly infectious disease caused by mycobacteria, mainly Mycobacterium tuberculosis. ... Motto Процветание в единстве(Russian) Protsvetanie v edinstve(transliteration) Prosperity in unity Anthem Нивы и горы твои волшебны, Родина(Russian) Nivy i gory tvoi volshebny, Rodina(transliteration) Your fields and mounts are wonderful, Motherland Location of Crimea (red) with respect to Ukraine (light blue). ... For other uses, see Black Sea (disambiguation). ... This article does not cite any references or sources. ...


Between 1859 and 1861, he worked on the capillarity of liquids and the workings of the spectroscope in Heidelberg. In the late august of 1861 he wrote his first book on the spectroscope in which it received high acclaim. In 1862, he married Feozva Nikitichna Leshcheva. Mendeleev became Professor of Chemistry at the Saint Petersburg Technological Institute and the University of St. Petersburg in 1863 he achieved tenure in 1867, and by 1871 had transformed St. Petersburg into an internationally recognized center for chemistry research. In 1865 he became Doctor of Science for his dissertation "On the Combinations of Water with Alcohol". In 1876, he became obsessed with Anna Ivanova Popova and began courting her; in 1881 he proposed to her and threatened suicide if she refused. His divorce from Leshcheva was finalized one month after he had married Popova in early 1882. Even after the divorce, Mendeleev was technically a bigamist; the Russian Orthodox Church required at least 7 years before lawful re-marriage. His divorce and the surrounding controversy contributed to his failure to be admitted to the Russian Academy of Sciences (despite his international fame by that time). His daughter from his second marriage, Lyubov, became the wife of the famous Russian poet Alexander Blok. His other children were son Vladimir (a sailor, he took part in the notable Eastern journey of Nicholas II) and daughter Olga, from his first marriage to Feozva, and son Ivan and a pair of twins from Anna. A spectroscope is a device which measures the spectrum of light. ... For other uses, see Heidelberg (disambiguation). ... Lapel pin of a graduate from Saint-Petersburg State Institute of Technology Saint Petersburg State Institute of Technology (Technological University) (Russian: ) is one of the oldest institutions of higher education in Russia (founded in 1828), that currently trains around 5000 students. ... Saint Petersburg State University (Санкт-Петербургский Государственный Университет) is one of the oldest Russian educational institutions, established in the city of Saint Petersburg on January 28, 1724 by a decree of Peter the Great. ... Polygamy, literally many marriages in ancient Greek, is a marital practice in which a person has more than one spouse simultaneously (as opposed to monogamy where each person has a maximum of one spouse at any one time). ... The Russian Orthodox Church of the Moscow Patriarchate (Russian: ), also known as the Orthodox Christian Church of Russia, is a body of Christians who are united under the Patriarch of Moscow, who in turn is in communion with the other patriarchs and primates of the Eastern Orthodox Church. ... Blok in 1907 Alexander Blok (Александр Александрович Блок, November 28 [O.S. November 16] 1880 – August 7, 1921), was perhaps the most gifted lyrical poet produced by Russia after Alexander Pushkin. ... The eastern journey of Nicholas II in 1890–1891 was a notable round-the-world voyage of Tsarevich Nicholas Alexandrovich of Russia. ...


Though Mendeleev was widely honored by scientific organizations all over Europe, including the Copley Medal from the Royal Society of London, he resigned from St. Petersburg University on August 17, 1890. For other uses, see Europe (disambiguation). ... The Copley Medal is a scientific award for work in any field of science, the highest award granted by the Royal Society of London. ... For other uses, see Royal Society (disambiguation). ... This article is about the capital of England and the United Kingdom. ... is the 229th day of the year (230th in leap years) in the Gregorian calendar. ... Year 1890 (MDCCCXC) was a common year starting on Wednesday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Monday of the Julian calendar). ...


In 1893, he was appointed Director of the Bureau of Weights and Measures. It was in this role that he was directed to formulate new state standards for the production of vodka. His fascination with molecular weights led him to conclude that to be in perfect molecular balance, vodka should be produced in the ratio of one molecule of ethyl alcohol diluted with two molecules of water, giving a dilution by volume of approximately 38% alcohol to 62% water. As a result of his work, in 1894 new standards for vodka were introduced into Russian law and all vodka had to be produced at 40% alcohol by volume. Vodka bottling machine, Shatskaya Vodka Shatsk, Russia Vodka (Polish: wódka, Russian: водка) is one of the worlds most popular distilled beverages. ...


Mendeleev also investigated the composition of oil fields, and helped to find the first oil refinery in Russia. View of Shell Oil Refinery in Martinez, California. ...


Mendeleev died in 1907 in St. Petersburg, Russia from influenza. The Mendeleev crater on the Moon, as well as element number 101, the radioactive mendelevium, are named after him. Saint Petersburg  listen (Russian: Санкт-Петербу́рг, English transliteration: Sankt-Peterburg), colloquially known as Питер (transliterated Piter), formerly known as Leningrad (Ленингра́д, 1924–1991... Influenza, commonly known as flu, is an infectious disease of birds and mammals caused by RNA viruses of the family Orthomyxoviridae (the influenza viruses). ... Mendeleev is a large lunar impact crater that is located on the far side of the Moon, as seen from the Earth. ... This article is about Earths moon. ... The periodic table of the chemical elements A chemical element, or element, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ... General Name, Symbol, Number mendelevium, Md, 101 Chemical series actinides Group, Period, Block n/a, 7, f Appearance unknown, probably silvery white or metallic gray Atomic mass (258) g·mol−1 Electron configuration [Rn] 5f13 7s2 Electrons per shell 2, 8, 18, 32, 31, 8, 2 Physical properties Phase solid...


Periodic table

One form of Mendeleev's periodic table, from the 1st English edition of his textbook (1891, based on the Russian 5th edition)
One form of Mendeleev's periodic table, from the 1st English edition of his textbook (1891, based on the Russian 5th edition)
Sculpture in honor of Mendeleev and the periodic table, located in Bratislava, Slovakia
Sculpture in honor of Mendeleev and the periodic table, located in Bratislava, Slovakia

After becoming a teacher, he wrote the definitive two-volume textbook at that time: Principles of Chemistry (1868-1870). As he attempted to classify the elements according to their chemical properties, he noticed patterns that led him to postulate his Periodic Table. Image File history File links Download high resolution version (2116x2556, 864 KB) File links The following pages link to this file: Dmitri Mendeleev ... Image File history File links Download high resolution version (2116x2556, 864 KB) File links The following pages link to this file: Dmitri Mendeleev ... Image File history File linksMetadata Download high-resolution version (2816x2112, 2433 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Talk:Chemistry Dmitri Mendeleev Talk:Dmitri Mendeleev User:Itub Metadata This file contains additional information, probably added from... Image File history File linksMetadata Download high-resolution version (2816x2112, 2433 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Talk:Chemistry Dmitri Mendeleev Talk:Dmitri Mendeleev User:Itub Metadata This file contains additional information, probably added from... The periodic table of the chemical elements A chemical element, or element, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ... A chemical substance is any material substance used in or obtained by a process in chemistry: A chemical compound is a substance consisting of two or more chemical elements that are chemically combined in fixed proportions. ...


Unknown to Mendeleev, several other scientists had also been working on their own tables of elements. One was John Newlands, who published his Law of Octaves in 1865. However, the lack of spaces for undiscovered elements and the placing of two elements in one box were criticised and his ideas were not accepted. Another was Lothar Meyer, who published a work in 1864, describing 28 elements. Like Newlands, Meyer did not seem to have the idea of using a table to predict new elements. In contrast to Newlands' methodical approach to creating a table, Mendeleev's was almost accidental and emerged gradually. John Alexander Reina Newlands (November 26, 1838 - July 29, 1898) was an English analytical chemist who prepared in 1863 the first periodic table of the elements arranged in order of relative atomic masses, and pointed out in 1865 the law of octaves whereby every eighth element has similar properties. ... Julius Lothar Meyer (19 August 1830 - 11 April 1895) was born in Varel, at that time belonging to the duchy of Oldenburg, now part of Germany. ...


As a better understanding of atomic mass was developed and better data became available, Mendeleev made for himself the following table:

Cl 35.5 K 39 Ca 40
Br 80 Rb 85 Sr 88
I 127 Cs 133 Ba 137

By adding additional elements following this pattern, he developed his version of the periodic table.


On March 6, 1869, Mendeleev made a formal presentation to the Russian Chemical Society, entitled The Dependence between the Properties of the Atomic Weights of the Elements, which described elements according to both weight and valence. This presentation stated that is the 65th day of the year (66th in leap years) in the Gregorian calendar. ... 1869 (MDCCCLXIX) is a common year starting on Friday (link will take you to calendar) of the Gregorian calendar or a common year starting on Sunday of the 12-day-slower Julian calendar. ...

  1. The elements, if arranged according to their atomic mass, exhibit an apparent periodicity of properties.
  2. Elements which are similar as regards to their chemical properties have atomic weights which are either of nearly the same value (e.g., Pt, Ir, Os) or which increase regularly (e.g., K, Rb, Cs).
  3. The arrangement of the elements in groups of elements in the order of their atomic weights corresponds to their so-called valencies, as well as, to some extent, to their distinctive chemical properties; as is apparent among other series in that of Li, Be, B, C, N, O, and F.
  4. The elements which are the most widely diffused have small atomic weights.
  5. The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body.
  6. We must expect the discovery of many yet unknown elements–for example, two elements, analogous to aluminium and silicon, whose atomic weights would be between 65 and 75.
  7. The atomic weight of an element may sometimes be amended by a knowledge of those of its contiguous elements. Thus the atomic weight of tellurium must lie between 123 and 126, and cannot be 128. Here Mendeleev was wrong as the atomic mass of tellurium (127.6) remains higher than that of iodine (126.9).
  8. Certain characteristic properties of elements can be foretold from their atomic weights.

Only a few months after Mendeleev published his periodic table of all known elements (and predicted several new elements to complete the table), Meyer published a virtually identical table. Some people consider Meyer and Mendeleev the co-creators of the periodic table, although most agree that Mendeleev's accurate prediction of the qualities of what he called ekasilicon (germanium), ekaaluminium (gallium) and ekaboron (scandium) qualifies him for deserving the majority of the credit for studies. The periodic table of the chemical elements A chemical element, or element, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ... The atomic mass (ma) is the mass of an atom at rest, most often expressed in unified atomic mass units. ... Aluminum redirects here. ... Not to be confused with Silicone. ... General Name, Symbol, Number tellurium, Te, 52 Chemical series metalloids Group, Period, Block 16, 5, p Appearance silvery lustrous gray Standard atomic weight 127. ... For the record label, see Iodine Recordings. ... General Name, Symbol, Number germanium, Ge, 32 Series metalloids Group, Period, Block 14 (IVA), 4 , p Density, Hardness 5323 kg/m3, 6 Appearance greyish white Atomic properties Atomic weight 72. ... General Name, Symbol, Number germanium, Ge, 32 Chemical series metalloids Group, Period, Block 14, 4, p Appearance grayish white Standard atomic weight 72. ... When Dmitri Mendeleev proposed his periodic table, he noted gaps in the table, and predicted that as of yet unknown elements existed with properties appropriate to fill those gaps. ... General Name, Symbol, Number gallium, Ga, 31 Chemical series poor metals Group, Period, Block 13, 4, p Appearance silvery white   Standard atomic weight 69. ... When Dmitri Mendeleev proposed his periodic table, he noted gaps in the table, and predicted that as of yet unknown elements existed with properties appropriate to fill those gaps. ... General Name, Symbol, Number scandium, Sc, 21 Chemical series transition metals Group, Period, Block 3, 4, d Appearance silvery white Atomic mass 44. ...

See also an interesting connection between the Periodic Table and Sanskrit Grammar

As others before him had done, he questioned the accuracy of accepted atomic weights, pointing out that they did not correspond to those predicted by the Periodic Law. He noted that tellurium has a higher atomic weight than iodine, but he placed them in the correct order, assuming that the accepted atomic weights at the time were incorrect. He was puzzled about where to put the known lanthanides, and predicted the existence of another row to the table which were the actinides which were some of the most heaviest in atomic mass. Indian postage stamp depicting (2004), with the implication that he used (पाणिनि; IPA ) was an ancient Indian grammarian from Gandhara (traditionally 520–460 BC, but estimates range from the 7th to 4th centuries BC). ... General Name, Symbol, Number tellurium, Te, 52 Chemical series metalloids Group, Period, Block 16, 5, p Appearance silvery lustrous gray Standard atomic weight 127. ... For the record label, see Iodine Recordings. ... The lanthanide series comprises the 15 elements from lanthanum to lutetium on the periodic table, with atomic numbers 57 through 71. ... The actinide (or actinoid) series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table, with atomic numbers 89 - 103[1]. The actinide series is named after actinium. ...


Some people laughed at Mendeleev for predicting that there would be more radioactive liquids, but he was right Ga (Gallium) and Ge (Germanium)was found in the future fitting perfectly into the two missing spaces. [3] General Name, Symbol, Number gallium, Ga, 31 Chemical series poor metals Group, Period, Block 13, 4, p Appearance silvery white   Standard atomic weight 69. ... General Name, Symbol, Number germanium, Ge, 32 Chemical series metalloids Group, Period, Block 14, 4, p Appearance grayish white Standard atomic weight 72. ...


Other achievements

Mendeleev made other important contributions to chemistry. The Russian chemist and science historian L.A. Tchugayev has characterized him as "a chemist of genius, first-class physicist, a fruitful researcher in the fields of hydrodynamics, meteorology, geology, certain branches of chemical technology (explosives, petroleum, and fuels, for example) and other disciplines adjacent to chemistry and physics, a thorough expert of chemical industry and industry in general, and an original thinker in the field of economy." Mendeleev was one of the founders, in 1869, of the Russian Chemical Society. He worked on the theory and practice of protectionist trade and on agriculture. Image File history File links Дмитрий_Иванович_Менделеев_4. ...


In an attempt at a chemical conception of the Aether, he put forward a hypothesis that there existed two inert chemical elements of lesser atomic weight than hydrogen. Of these two proposed elements, he thought the lighter to be an all-penetrating, all-pervasive gas, and the slightly heavier one to be a proposed element, coronium. Hinduism (Tattva) and Buddhism (Mahābhūta) Vayu / Pavan — Air / Wind Agni/Tejas — Fire Akasha — Aether Prithvi / Bhumi — Earth Ap / Jala — Water Chinese (Wu Xing) Japanese (Godai) Earth (地) | Water (水) | Fire (火) | Air / Wind (風) | Void / Sky / Heaven (空) Bön Māori According to ancient and medieval science, Aether (Greek αἰθήρ, aithēr[1... The periodic table of the chemical elements A chemical element, or element, is a type of atom that is defined by its atomic number; that is, by the number of protons in its nucleus. ... General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Coronium was the name of a suggested chemical element, hypothesised in the 19th century. ...



Mendeleev devoted much study and made important contributions to the determination of the nature of such indefinite compounds as solutions. Making a saline water solution by dissolving table salt (NaCl) in water This article is about chemical solutions. ...

Mendeleev Medal
Mendeleev Medal

In another department of physical chemistry, he investigated the expansion of liquids with heat, and devised a formula similar to Gay-Lussac's law of the uniformity of the expansion of gases, while as far back as 1861 he anticipated Thomas Andrews' conception of the critical temperature of gases by defining the absolute boiling-point of a substance as the temperature at which cohesion and heat of vaporization become equal to zero and the liquid changes to vapor, irrespective of the pressure and volume. Image File history File links Metadata No higher resolution available. ... Image File history File links Metadata No higher resolution available. ... Physical chemistry is the application of physics to macroscopic, microscopic, atomic, subatomic, and particulate phenomena in chemical systems[1]within the field of chemistry traditionally using the principles, practices and concepts of thermodynamics, quantum chemistry, statistical mechanics and kinetics. ... Joseph-Louis Gay-Lussac (December 6, 1778–May 10, 1850) was a French chemist and physicist. ... Thomas Andrews (December 19, 1813–November 26, 1885), Irish chemist and physicist, was born in Belfast, where his father was a linen merchant. ...


Mendeleev is given credit for the introduction of the metric system to the Russian Empire. The International System of Units (symbol: SI) (for the French phrase Syst me International dUnit s) is the most widely used system of units. ... The subject of this article was previously also known as Russia. ...


He invented pyrocollodion, a kind of smokeless powder based on nitrocellulose. This work had been commissioned by the Russian Navy, which however did not adopt its use. In 1892 Mendeleev organized its manufacture. Pyrocollodion is a smokeless powder invented by Dimitri Mendeleev. ... Smokeless powder Smokeless powder is the name given to a number of gunpowder-like propellants used in firearms which produce negligible smoke when fired, unlike the older black powder which it replaced. ... Skeletal formula of nitrocellulose Ball-and-stick model of a section of nitrocellulose Nitrocellulose (also: cellulose nitrate, flash paper) is a highly flammable compound formed by nitrating cellulose through, for example, exposure to nitric acid or another powerful nitrating agent. ...


Mendeleev studied petroleum origin and concluded that hydrocarbons are abiogenic and form deep within the earth. He wrote: "The capital fact to note is that petroleum was born in the depths of the earth, and it is only there that we must seek its origin." (Dmitri Mendeleev, 1877)[4]


See also

Professor Dimitri Mendeleev published the first Periodic Table of the Atomic Elements in 1869 based on properties which appeared with some regularity as he laid out the elements from lightest to heaviest. ... The theory of abiogenic petroleum origin holds that natural petroleum was formed from deep carbon deposits, perhaps dating to the formation of the Earth. ...

Further reading

  • Gordin, Michael (2004). A Well-Ordered Thing: Dmitrii Mendeleev and the Shadow of the Periodic Table. New York: Basic Books. ISBN 0-465-02775-X. 
  • Mendeleyev, Dmitry Ivanovich; Jensen, William B. (2005). Mendeleev on the Periodic Law: Selected Writings, 1869 - 1905. Mineola, NY: Dover. ISBN 0-486-44571-2. 
  • Strathern, Paul (2001). Mendeleyev's Dream: The Quest For the Elements. New York: St. Martins Press. ISBN 0-312-26204-3. 

Paul Strathern (1940-) is a British writer and academic. ...

External links

Biographies

  • Roger Rumppe and Michael E. Sixtus, "Ich bin Mendelejeff", care of the Woodrow Wilson Leadership Program in Chemistry. 20 sources. Notes, among other things, that various sources list D.M.'s siblings as being 10 to 16 in number.

Periodic table

  • Original Periodic Table, annotated
  • Mendeleev's first draft version of the Periodic Table, 17 February 1869

Other

  • References about Mendeleev, maintained by Eugene V. Babaev, last updated May 2005 (as of December 2005).
  • Faraday Lecture by Mendeleev, July 4, 1889, annotated
  • Mendeleev and Sanskrit
  • Picture of Mendeleev, Edgar Fahs Smith Collection, University of Pennsylvania
  • Everything in its Place
  • Mendeleev profile at thinkquest.org
  • Dmitry Ivanovich Mendeleyev at BGSU
  • Dmitri Ivanovich Mendeleev article on h2g2.
  • Who was Dmitri Mendeleev?
  • Photographs of the Mendeleev family's now dilapidated house
Wikimedia Commons has media related to:
Dmitri Mendeleev

  Results from FactBites:
 
Dmitriy Mendeleev Online (416 words)
Dmitri Mendeleyev and the Discovery of the Periodic Law by J.Tennenbaum from The American Almanac.
Mendeleev and Meyer from the Chemical Heritage Foundation.
Mendeleev and development of the Periodic Chart (from Sequim Science).
  More results at FactBites »


 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Lesson Plans | Student Area | Student FAQ | Reviews | Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m