Period+4+Mendeleev

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 * //Who was Dmitri Mendeleev?//**


 * //How did Mendeleev become involved in the field of chemistry? What education and work experience did he have?//**


 * //What collaborations led to Mendeleev's work with defining "Periodic Law"?

How was Mendeleev able to predict the properties of elements that had not yet been discovered?//**

=**//__Mendeleev: The Father Of The Periodic Table __ //**=

About him:
After his father passed away and his mothers factory was destroyed by a fire, Dmirti and his family moved to St. Petersburg. His mother worked tirelessly to put him through college in St. Petersburg. He attended the Main Pedagogical Institute in 1850. Dmitri was then diagnosed with tuberculosis after he graduated and he moved to the northern coast of the black sea in 1855. He then became the chief science master of Simferopol gymnasium which is one of the oldest schools in Ukraine. His father was a big influence on him because he was a chemist. He worked on the workings of the spectroscope and then wrote a book on it. After he wrote his book he became professor of chemistry at the St. Petersburg Technical Institute and the University in 1863. Two years later, he became Doctor of Science. In 1868 to 1870 wrote a book called //The Principles of Chemistry,// while he was writing his book he created a table or chart with the so far discovered elements on it, later known as the periodic table. His discoveries: In his lifetime he studied science and became a chemist. Dmitri helped us have a better understanding of atoms. He was the discoverer of 63 known elements on the periodic table, he left space for elements that may be later found and predicted three others. Mendeleev was able to predict the properties of elements that have not yet been discovered by following a pattern. He arranged the elements according to atomic mass and atomic weight. The atomic weights and properties of certain elements that were discovered by previous scientists led to Mendeleev's work of defining the periodic table. A famous quote by Mendeleev is “I began to look about and write down the elements with their atomic weights and typical properties, analogous elements and like atomic weights on separate cards, and this soon convinced me that the properties of elements are in periodic dependence upon their atomic weights.” In 1907, after a long and successful life Dmitri died in St. Petersburg due to influenza. Mendelevium, the radioactive element, also element number 101, was named after him.

__**Sources:**__ [|http://members.aol.com/]profchm/periodic.html http://www.corrosion-doctors.org/Biographies/MendeleevBio.htm [|http://www.chemistry.co.nz/ mendeleev.htm] http://www.aip.org/history/curie/periodic.htm