The periodic table of chemical elements – history, nature, meaning
نویسندگان
چکیده
منابع مشابه
On the occurrence of metallic character in the periodic table of the chemical elements.
The classification of a chemical element as either 'metal' or 'non-metal' continues to form the basis of an instantly recognizable, universal representation of the periodic table (Mendeleeff D. 1905 The principles of chemistry, vol. II, p. 23; Poliakoff M. & Tang S. 2015 Phil. Trans. R. Soc. A 373: , 20140211). Here, we review major, pre-quantum-mechanical innovations (Goldhammer DA. 1913 Dispe...
متن کاملromantic education:reading william wordsworths the prelude in the light of the history of ideas
عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...
Superconductivity and the periodic table: from elements to materials.
Based on the normal-state electronic band structure, the necessary condition for a metal to become a superconductor is the simultaneous occurrence of flat and steep bands at the Fermi level. The sufficient condition at least for conventional superconductors is a strong enough coupling of the flat band states to the lattice, e.g. via phonons. Selected elements (Te) and compounds of the rare eart...
متن کاملOrdinal Explanation of the Periodic System of Chemical Elements
Textbooks often claim that quantum mechanics explained the periodic system: namely, the actual configuration of electronic orbits that is responsible for the element’s chemical properties can be described as the one that minimizes the total energy, and the energy of each configuration can be computed by using quantum mechanics. However, a careful analysis of this explanation reveals that, in ad...
متن کاملnature of meaning
what is the true nature of meaning? what is its status? what are differences between meaning, concept, referent and fact? is meaning mental or extra-mental or neither? these are fundamental questions on the nature and ontology of meaning.meaning is identified with concept by some, confused with referent by others. some scholars have not distinguished meaning from referent and fact. still anothe...
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ژورنال
عنوان ژورنال: Pure and Applied Chemistry
سال: 2019
ISSN: 1365-3075,0033-4545
DOI: 10.1515/pac-2019-0902