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Mendeleev had predicted an atomic mass of 44 for eka-boron in 1871, while scandium has an atomic mass of 44.955907. In 1871, Mendeleev predicted [4] the existence of a yet-undiscovered element he named eka-aluminium (because of its proximity to aluminium in the periodic table).
However, success of Mendeleev's predictions helped spread the word about his periodic table. [56] Later, chemists used the successes of these Mendeleev's predictions to justify his table. [15] By 1890, Mendeleev's periodic table had been universally recognized as a piece of basic chemical knowledge. [57]
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 first periodic table to become generally accepted was that of the Russian chemist Dmitri Mendeleev in 1869; he formulated the periodic law as a dependence of chemical properties on atomic mass. As not all elements were then known, there were gaps in his periodic table, and Mendeleev successfully used the periodic law to predict some ...
Pages in category "Chemical elements predicted by Dmitri Mendeleev" The following 9 pages are in this category, out of 9 total.
Since Dimitri Mendeleev formulated the periodic law in 1871, and published an associated periodic table of chemical elements, authors have experimented with varying types of periodic tables including for teaching, aesthetic or philosophical purposes.
Periodic table forms. ... 32-column; Alternative and extended forms; Periodic table history. D. Mendeleev. 1871 table; 1869 predictions; ... and the last table lists ...
D. I. Mendeleev: Mendeleev arranges the 63 elements known at that time (omitting terbium, as chemists were unsure of its existence, and helium, as it was not found on Earth) into the first modern periodic table and correctly predicts several others. 31 Gallium: 1875 P. E. L. de Boisbaudran: 1878 P. E. L. de Boisbaudran and E. Jungfleisch