有权威
发表于 2025-3-23 13:29:57
Chirurgische Anatomie des Gesichtes,ficient to determine the degree of relatedness among the chemical elements. Mendeleev’s revision of the triad concept to include both vertical and horizontal triads and to interpolate various properties rather than to determine chemical relatedness is also reviewed.
加花粗鄙人
发表于 2025-3-23 14:49:19
Morphologie der Gesichtsfalten,Sir John F. W. Herschel was one of the leading natural philosophers of the nineteenth century and published his own monograph, in which he listed the ten key axioms of chemistry. Later in that decade, he gave the President’s address for the Chemistry Section at the 1858 British Association for the A
Individual
发表于 2025-3-23 20:29:13
https://doi.org/10.1007/978-3-642-57773-4ctions to the arrangement by contemporaries, by later chemists of the nineteenth century, and by selected historians are examined. It is argued that Béguyer de Chancourtois discovered the law of chemical periodicity, albeit in a form too flawed and indefinite to appeal to contemporary chemists.
obstruct
发表于 2025-3-24 00:32:03
https://doi.org/10.1007/978-3-642-57773-4ars before Mendeleev’s first periodic table. This chapter provides an overview of the periodic systems of Odling and Newlands, their development over time, the reception of their work, and our perspective on the often-discussed question of who deserves recognition as a discoverer of the periodic law
暴露他抗议
发表于 2025-3-24 05:55:59
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我说不重要
发表于 2025-3-24 10:21:30
Zhengyou Zhang,Olivier Faugerasth anniversary of the creation of the periodic system, if the point of reference is February 17, 1869 (today the date is given by the Gregorian calendar as March 1, 1869), on which Dmitri I. Mendeleev (1834–1907) formulated an overview of the natural elements. The logo of the IYPT refers only to Men
微生物
发表于 2025-3-24 13:56:34
,Konzepte für die Luftreinhaltepolitik,d simple bodies. Three of the missing elements were discovered within a span of time from 1875 to 1886: gallium, scandium, and germanium. Aside from the great psychological impact, they served to decisively change the attitude of the scientific world with respect to the validity of the periodic syst
genuine
发表于 2025-3-24 18:37:07
https://doi.org/10.1007/978-3-642-58410-7ndium, yttrium and the lanthanides—a process that extended until 1947, as well as the efforts to locate them in the periodic system. The striking similarity of the chemistry of the metals has made their isolation in a pure state a challenge. Developments in their chemistry extending up to the presen
Efflorescent
发表于 2025-3-24 22:14:36
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革新
发表于 2025-3-24 23:19:07
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