Mendeleev's law

Mendeleev's law
Men·de·le·ev's law or Men·de·lé·ef's law also Men·de·ley·ev's law .men-də-'lā-efs- n PERIODIC LAW
Mendeleyev Dmitry Ivanovich (1834-1907)
Russian chemist. Mendeleyev made a fundamental contribution to chemistry by proving that all chemical elements are related members of a single ordered system. He was a professor of chemistry at St. Petersburg, and in his later years he served as director of his government's bureau of weights and measures. In 1869 he devised his original version of a periodic table in which all known elements are arranged according to their atomic weights. In his improved table of 1871 he left gaps for elements not yet discovered but which had predictable properties. He also formulated a periodic law stating that the chemical properties of the elements are periodic functions of their atomic weights. 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. The table also served to unify much of modern physics. The radioactive element mendelevium was named in his honor when it was first produced by scientists in 1955.

Medical dictionary. 2011.

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  • Mendeleev's law — n. Chem. PERIODIC LAW …   English World dictionary

  • Mendeleev's law — noun (chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers • Syn: ↑periodic law • Topics: ↑chemistry, ↑chemical science • Hypernyms: ↑law, ↑ …   Useful english dictionary

  • Mendeleev's law — Chem. See periodic law (def. 2). * * * …   Universalium

  • Mendeleev's law table — Men·de·le·ev s law, table (men″də laґefs) [Dimitri Ivanovich Mendeleev (or Mendelйef or Mendelйeff), Russian chemist, 1834–1907] see periodic law, under law and periodic table, under table …   Medical dictionary

  • law of nature — noun a generalization that describes recurring facts or events in nature (Freq. 3) the laws of thermodynamics • Syn: ↑law • Hypernyms: ↑concept, ↑conception, ↑construct • …   Useful english dictionary

  • 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. Date of readings is due to two dates: birthday of Dmitri Mendeleev (8… …   Wikipedia

  • Mendeleev's predicted elements — Professor Dmitri Mendeleev published the first Periodic Table of the Atomic Elements in 1869 based on properties which appeared with some regularity as he laid out the elements from lightest to heaviest. [ cite… …   Wikipedia

  • Mendeleev — /men dl ay euhf/; Russ. /myin dyi lye yef/, n. Dmitri Ivanovich /dmyee trddyee ee vah neuh vyich/, 1834 1907, Russian chemist: helped develop the periodic law. Also, Mendeleyev, Mendelejeff. * * * …   Universalium

  • Mendeleev — /mɪndɪˈljeɪjəf/ (say mindi lyayyuhf) noun Dimitri Ivanovich /dəˈmitri ɪˈvanəvɪtʃ/ (say duh meetree i vahnuhvich), 1834–1907, Russian chemist; helped to develop the periodic law. Also, Mendelyeev, Mendeleyev …  

  • periodic law — n a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of most of their properties called also Mendeleev s law * * * if the elements are arranged in the sequence of… …   Medical dictionary

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