Dmitri+Mendeleev

Dmitri Mendeleev

Dmitiri Ivanovich Mendeleev was a Russian chemist and inventor. He was born on February 8, 1834 and died on February 2, 1907. Mendeleev studied science at St. Petersburg and graduated in 1856. In 1863, he was appointed to a professorship and in 1866 he succeeded to the Chair in the University. He formulated the Periodic Law, created his own version of the periodic table of elements, and used it to correct the properties of some already discover elements. He also then predicted the properties of elements yet to be discovered. He is best known for his work on the periodic table; arranging the 63 known elements into the Periodic Table based on the atomic mass, which he published in Principles of Chemistry. He ordered the elements from lowest atomic mass unit to highest atomic mass unit. He organized the elements in groups of similar properties and atomic mass. In his periodic table, elements with similar characteristics fall in vertical columns, called groups. He left blank spaces for the undiscovered elements. He even predicted the properties of the missing elements. Dmitri Mendeleev showed how the atomic number was the important number rather than the atomic mass. He at first called his table the Periodic System instead of the Periodic Table.

First step Mendeleev took was lining all the elements up from the lowest atomic mass to the greatest atomic mass. The question marks represents the elements that were yet discovered and he predicted them.

The elements with the same characteristics fall in the same vertical columns. These columns are called groups. Distraction Pages:  [|www.twitter.com]   [|www.pintrest.com]   [|www.instagram.com]

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