![]() ![]() ![]() Date of readings is due to two dates: birthday of Dmitri Mendeleev (8… … Wikipedia 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. Hypernyms: ↑concept, ↑conception, ↑construct.Law of nature - noun a generalization that describes recurring facts or events in nature (Freq. ev s law, table (men″də laґefs) see periodic law, under law and periodic table, under table … Medical dictionary.Hypernyms: ↑law, ↑ … Useful english dictionary.Mendeleev's law - noun (chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers ![]() The radioactive element mendelevium was named in his honor when it was first produced by scientists in 1955. The table also served to unify much of modern physics. His periodic table became the framework for a great part of chemical theory and proved to be highly useful in the interpretation of the processes of radioactive decay. He also formulated a periodic law stating that the chemical properties of the elements are periodic functions of their atomic weights. In his improved table of 1871 he left gaps for elements not yet discovered but which had predictable properties. In 1869 he devised his original version of a periodic table in which all known elements are arranged according to their atomic weights. Petersburg, and in his later years he served as director of his government's bureau of weights and measures. Mendeleyev made a fundamental contribution to chemistry by proving that all chemical elements are related members of a single ordered system. Pnictogen - noun /ˈpnɪktə(ʊ)dʒən/ Any element from group 15 of the periodic table nitrogen, phosphorus, arsenic, antimony and bismuth.Russian chemist. Oxypnictide - noun Any substance that is both an oxide and a pnictide, especially any of a class of such iron compounds that are semiconductors … Wiktionaryįerropnictide - noun Any of a class of iron pnictide materials that are superconductors … Wiktionary Europe completed the Large Hadron Collider, and China and India took… … Universalium Physical Sciences - ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. High-temperature superconductivity - Unsolved problems in physics What causes superconductivity at temperatures above 50 kelvin? High temperature superconductors (abbreviated high Tc or HTS) are materials that have a superconducting transition temperature (Tc) above 30 K… … Wikipedia Ferromagnetism is the basic mechanism by which… … Wikipedia Ferromagnetism is the physical theory which explains how materials become magnets. Although this group of compounds has been recognized since 1995, interest in these… … WikipediaĬhalcogen - Group 16 Period 2 8 O 3 … Wikipediaįerromagnetism - Not to be confused with Ferrimagnetism for an overview see Magnetism A magnet made of alnico, an iron alloy. Oxypnictide - In chemistry, oxypnictides are a class of materials including oxygen, a pnictogen (group V, especially phosphorus and arsenic) and one or more other elements. ![]()
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