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Dmitri Ivanovich Mendeleev (/ ˌ m ɛ n d əl ˈ eɪ ə f / MEN-dəl-AY-əf; [2] [b] [a] 8 February [O.S. 27 January] 1834 – 2 February [O.S. 20 January] 1907) was a Russian chemist known for formulating the periodic law and creating a version of the periodic table of elements.
The oldest president at the time of death was George H. W. Bush, who died at the age of 94 years, 171 days. [c] John F. Kennedy, assassinated at the age of 46 years, 177 days, was the youngest to have died in office; the youngest to have died by natural causes was James K. Polk, who died of cholera at the age of 53 years, 225 days.
— George Stinney, African-American child and youngest American with an exact age executed by the United States (16 June 1944), on whether he had any final words before his wrongful execution via electric chair. 14-year-old Stinney was tried and sentenced to death by Judge Philip H. Stoll in under three hours on 14 April after an all-white ...
Mendeleev readings — a solemn act, the annual reports of leading Soviet/Russian scholars on topics affecting all areas of chemistry and its related sciences: physics, biology and biochemistry. Date of readings is due to two dates: birthday of Dmitri Mendeleev (8 February 1834), and sending messages to them on the opening Periodic Law (March ...
Name of Russia (Russian: Имя Россия, English: "The Name of Russia") was a series produced by the Russia-1 television channel that aimed to determine the most notable figure in Russian history through polling promoted via the Internet, Radio, and Television.
Pyrocollodion is a smokeless powder invented by Dmitri Mendeleev. A variant of the nitrocellulose family of compounds, it was discovered by Dmitri Mendeleev in 1892. He had proposed its use as a replacement for gunpowder in the Russian Navy. This offer was rejected because of cost and efficiency considerations.
Clemens Alexander Winkler (December 26, 1838 – October 8, 1904) was a German chemist who discovered the element germanium in 1886, solidifying Dmitri Mendeleev's theory of periodicity. Life [ edit ]
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 November 2024. Development of the table of chemical elements The American chemist Glenn T. Seaborg —after whom the element seaborgium is named—standing in front of a periodic table, May 19, 1950 Part of a series on the Periodic table Periodic table forms 18-column 32-column Alternative and ...