Dmitri mendeleev biography for kids

Later inhe published a textbook named Organic Chemistry. Inhe became a Doctor of Science. He achieved tenure in at St. Petersburg University and started to teach inorganic chemistry while succeeding Voskresenskii to this post; byhe had transformed Saint Petersburg into an internationally recognized center for chemistry research. Inthere were 56 known elements with a new element being discovered at a rate of approximately one per year.

It became the definitive textbook of its time. It was published in two volumes between andand Mendeleev wrote it as he was preparing a textbook for his course. This is when he made his most important discovery. Unaware of the earlier work on periodic tables going on in the s, he made the following table:. By adding additional elements following this pattern, Mendeleev developed his extended version of the periodic table.

On 6 Marchhe presented it to the Russian Chemical Society. Mendeleev's table described elements according to both atomic weight now called relative atomic mass and valence. This presentation stated that. Textbook Author : He wrote a comprehensive chemistry textbook called "Principles of Chemistry. Aerodynamics : He had a deep interest in aerodynamics and even made a solo flight in a hot air balloon to study a solar eclipse.

Mineral Namesake : The mineral mendeleevite is named in his honor.

Dmitri mendeleev biography for kids

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. We must expect the discovery of many as yet unknown elements-for example, elements analogous to aluminum and silicon - whose atomic weight would be between 65 and 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 andand cannot be Certain characteristic properties of elements can be foretold from their atomic weights. Unknown to Mendeleev, Lothar Meyer was working on a virtually identical periodic table. Meyer and Mendeleev can be considered the co-creators of this table. Though Mendeleev was widely honored from scientific organizations all over Europehis political activities worried the Russian government, which led to his resignation from St.

Petersburg University on August 17 Inhe was appointed Director of the Bureau of Weights and Measures. He had a combined six children from those two marriages. In the later years of his career, Mendeleyev was internationally recognized for his contributions to the field of chemistry. He received honorary awards from Oxford and Cambridge, as well as a medal from the Royal Society of London.

Mendeleyev died on February 2, At his funeral in St. Petersburg, his students carried a large copy of the periodic table of the elements as a tribute to his work. We strive for accuracy and fairness. If you see something that doesn't look right, contact us! Stephen Hawking. Chien-Shiung Wu. Jane Goodall. Marie Curie.