who is credited with developing the periodic table
Dmitri Mendeleev Dmitri Ivanovich Mendeleev[2] (English: /ˌmɛndəlˈeɪəf/ MEN-dəl-AY-əf;[3] Russian: Дмитрий Иванович Менделеев[note 1], tr. Dmítriy Ivánovich Mendeléyev, IPA: [ˈdmʲitrʲɪj ɪˈvanəvʲɪtɕ mʲɪndʲɪˈlʲejɪf] ( listen); 8 February 1834 – 2 February 1907 O.S. 27 January 1834 – 20 January 1907) was a Russian chemist and inventor. He formulated the Periodic Law, created a farsighted version of the periodic table of elements, and used it to correct the properties of some already discovered elements and also to predict the properties of eight elements yet to be discovered.
Frances Fisher Frances Louise Fisher[1] (born 11 May 1952)[2] is a British-American actress.
Gitanjali William Butler Yeats wrote the introduction to the first edition of Gitanjali.[4]
History of the periodic table Alexandre-Emile Béguyer de Chancourtois, a French geologist, was the first person to notice the periodicity of the elements — similar elements occurring at regular intervals when they are ordered by their atomic weights. In 1862 he devised an early form of periodic table, which he named Vis tellurique (the 'telluric helix'), after the element tellurium, which fell near the center of his diagram.[10][11] With the elements arranged in a spiral on a cylinder by order of increasing atomic weight, de Chancourtois saw that elements with similar properties lined up vertically. His 1863 publication included a chart (which contained ions and compounds,[12] in addition to elements), but his original paper in the Comptes Rendus de l'Académie des Sciences used geological rather than chemical terms and did not include a diagram. As a result, de Chancourtois' ideas received little attention until after the work of Dmitri Mendeleev had been publicised.[13]