Mendeleyev's group

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• Mendeleyev, Dmitry Ivanovich — ▪ Russian scientist Introduction Mendeleyev also spelled  Mendeleev   born January 27 (February 8, New Style), 1834, Tobolsk, Siberia, Russian Empire died January 20 (February 2), 1907, St. Petersburg, Russia  Russian chemist who developed the… …   Universalium

• boron group element — ▪ chemical elements Introduction  any of the five chemical elements constituting Group 13 (IIIa) of the periodic (periodic law) table (see Figure >). The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), an …   Universalium

• Carbon group — The carbon group is group 14 (IUPAC style) in the periodic table. Once also known as the tetrels (from Latin tetra , four), stemming from the earlier naming convention of this group as Group IVA. The group consists of carbon (C), silicon (Si),… …   Wikipedia

• periodic law — /pear ee od ik, pear /, Chem. 1. the law that the properties of the elements are periodic functions of their atomic numbers. 2. Also called Mendeleev s law. (originally) the statement that the chemical and physical properties of the elements… …   Universalium

• chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …   Universalium

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• chemical bonding — ▪ chemistry Introduction       any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …   Universalium

• Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …   Universalium

• Geber — For the 12th century astronomer, see Jabir ibn Aflah. For the anonymous 14th century Spanish alchemist, see Pseudo Geber. For the crater, see Geber (crater). Infobox Muslim scholars notability = Muslim scientist era = Islamic Golden Age color =… …   Wikipedia

• Metalloid —   13 14 15 16 17   2  B Boron …   Wikipedia

• Nobel Prize controversies — Nobel Prize Awarded for Outstanding contributions in physics, chemistry, literature, peace, and physiology or medicine. The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, identified with the Nobel Prize, is awarded for… …   Wikipedia