“The periodic system will be 150 years old”
“Created by Dimitri Mendeleyev – organize our elements.”
“He did not find any good textbook in chemistry.nDå created Dimitri Mendeleyev the periodic system.even fill it is 150 years.”
“Dimitri Mendeleyev was born in Tabolsk in Siberia in 1834 as the youngest of 17 siblings. When father Ivan died in tbc took mother Marija with the son of S:t Petersburg. It was 1850, and Dimitri was 16 years old. He was drafted into the lärarseminariet and eventually became a chemist.”
“There are several theories about why Mendeleyev created the periodic system. Most probable is the theory that he did not found any good textbook in chemistry. He then began to work with the book ”Chemistry foundations” and during the process he created the periodic system.”
“In the first version, as Mendeleyev presented for the Russian kemistsamfundet in march 1869, there were 63 elements. Today there are 118.”
“— the Chemistry had come into a phase where you knew what the formation of chemical elements atoms had their atomic weight and looked at the formation of chemical elements properties. We saw that the properties were periodic with respect to atomic weight, and that of course led on to the idea that there was a kind of underlying system in this. It was Mendeleyev discovered, ” says Sven Ledin professor of inorganic chemistry at Lund university to vetandets värld.”
“Element number 101 in the periodic table is mendelevium – named after Dimitri Mendeleyev.”