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Periodic Table of Chemical ElementsPeriodic table of chemical elements by D.I.Mendeleev
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Periodic table of chemical elements by D.I.Mendeleev
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Periodic Table of Chemical Elements | atomistry.com Reviews
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Periodic table of chemical elements by D.I.Mendeleev
Element Polonium, Po, Metalloid
Element Polonium, Po, Metalloid. They named it Polonium. After Marie's native land (Lat. Polonia - Poland). 7 natural metalloid polonium isotopes. With mass numbers 210-212, 214-216 and 218 are found as members of radioactive decay series of uranium, actinouranium and thorium. Is a rare element; its crustal abundance is 2x10. Is a soft metal with silver luster, density 9.3 g/cm. Melting point 254°C, boiling point 1162°C. Outer electron shell configuration is 6 s. As well as hydroxide PoO.
Element Plutonium, Pu
Element Plutonium, Pu. Had been discovered in 1940 by Edwin M. McMillan, Joseph W. Kennedy, and Arthur C. Wahl at the Berkeley Laboratory of the University of California by bombardment of uranium oxide U. With deuterons highly accelerated in the 60-inch Berkeley cyclotron. Later was found out that this reaction yields a short-lived Neptunium-238 isotope which, in his turn, produces Plutonium-238. Via bombardment of uranium with deuterons highly accelerated in the cyclotron. Plutonium-239.
Element Phosphorus, P, Non Metal
Element Phosphorus, P, Non Metal. Light-bearer) was formerly used to designate all substances which possess the property of emitting light without at the same time having a correspondingly high temperature. The name phosphorescence, used in physics for the after luminescence shown by certain substances after a previous exposure to light, is a relic of that usage. At the present day, the name phosphorus. The nerve and brain substances, more especially, are comparatively rich in phosphorus, which is there ...
Element Palladium, Pd, Transition Metal
Element Palladium, Pd, Transition Metal. Was discovered by William Hyde Wollaston in 1803, also in raw platinum, in the part soluble in aqua regia. When Wollaston separated some quantity of the metal, he, without reporting about the discovery, distributed anonymous advertising about new metal named palladium. This element was named by Wollaston in 1804 after the asteroid Pallas, which was discovered by named by astronomer Heinrich Wilhelm Matthäus Olbers two years earlier. Platinum, Nickel) (16-20% Pd.
Element Oxygen, O, Non Metal
Element Oxygen, O, Non Metal. Read more about Phlogistone. Joseph Priestley was generally acknowledged as the discoverer of oxygen. He separated oxygen on August 1, 1774 decomposing mercury (II) oxide. By heating it via the sun rays focused on it by powerful lens. However Priestley first did not realize that he discovered a new substance. He supposed that he just separated one of the components. Priestley informed Antoine Laurent Lavoisier about his discovery. Is the most abundant element on the Earth; i...
Element Nitrogen, N, Non Metal
Element Nitrogen, N, Non Metal. There is present in the air, besides oxygen, another substance which constitutes the greater part both by weight and by volume. From the fact that the residue of the air after removal of the oxygen can support neither combustion nor life, it was called azote, but it is now called nitrogen. Its chemical symbol is N. From nitrogenium. This name is due to the fact that nitrogen is an essential component of saltpetre (nitrum). Its combining weight is N. Is in so far of especia...
Element Niobium, Nb, Transition Metal
Element Niobium, Nb, Transition Metal. Main article History of Niobium. After Niobe, daughter of Tantalus in Greek mythology. Main article Occurrence of Niobium. The crustal abundance of Niobium. By mass. In nature Niobium. Is associated by Tantalum. It occurs in the minerals columbite columbite-tantalite or coltan, pyrochlore and loparite. Columbite-tantalite ( Fe. Contains 82-86% of Niobium. And Tantalum oxides. If Niobium. Contains 37.5-65.6% of Nb. Has 8-10% of the same oxide. Niobium minerals. Pyroc...
Element Nickel, Ni, Transition Metal
Element Nickel, Ni, Transition Metal. Unlike cobalt, which is not employed in the metallic state, metallic nickel is a material which is greatly used. It was formerly used only for alloys; thus German silver is an alloy of nickel with zinc and copper. Some decades ago, however, the difficulties caused by the high temperature of fusion of nickel. The electrical deposition of a metal depends on the fact that at the cathode of a circuit, the cations pass from the state of ions into the neutral state. In...
Element Neon, Ne, Noble Gas
Element Neon, Ne, Noble Gas. Main article: History of Neon discovery. Was discovered in 1898 by Scottish chemist William Ramsay and English chemist Morris W. Travers, when Ramsay chilled a sample of the atmosphere until it became a liquid, then warmed the liquid and captured the gases as they boiled off. The spectral analysis showed the presence of new three gases which were krypton, xenon, and neon. I should like to call it Novum. On the Earth. It has three stable isotopes:. Is supplied by natural waters.
Element Molybdenum, Mo, Transition Metal
Element Molybdenum, Mo, Transition Metal. Comes from the Greek molybdos. Meaning lead and the mineral lead glance. This was confused with molybdenite. Late Medieval. All three minerals were previously known as molybdaena. In 1758, Cronstedt presumed that molybdenite. Are different minerals; 20 years late Scheele proved it obtaining Mo. Which he called Wasserbleyerde or molybdenum acid. Is a typical rare element with crustal abundance 1.1 10. The main commercial mineral, forming hydrothermal deposits; H.
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Other styles of the periodic table
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Other styles of the periodic table. Here you can find other common styles of representations of the periodic law of chemical elements written by D.I. Mendeleev.
Chemical glossary
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Chemical glossary is under construction.
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Phosphorus Ionization Energy
http://phosphorus.atomistry.com/energy.html
The Phosphorus Ionization Energy. Is the energy required to remove from atom one mole of electrons with subsequent production of positively charged ion of Phosphorus. This process can be repeated many times, but the energy cost is increased dramatically. The general equation for the Phosphorus is:. 10117 kJ/mol = 242.03 Kcal/mol. 19032 kJ/mol = 455.31 Kcal/mol. 2912 kJ/mol = 696.65 Kcal/mol. 4956 kJ/mol = 1185.65 Kcal/mol. 6273 kJ/mol = 1500.72 Kcal/mol. 21268 kJ/mol = 5088.04 Kcal/mol.
Phosphatic Fertilisers
http://phosphorus.atomistry.com/phosphatic_fertilisers.html
Distribution of Phosphatic Rocks. Oceanic Deposits and Guanos. Phosphates occur in rocks of all the geological epochs. Apatite is associated with granites and gneisses. Ordinary sea-water may contain from 0.06 to 0.07 milligram of P. As well as Ca. Derived from minerals and animal remains. Calcium and magnesium phosphates. Calcium carbonate, sand, etc. The chemical exploitation of bones thus led by a gradual transition to the artificial fertiliser or mineral phosphate industry which will now be described.
Physical Properties of Phosphorus
http://phosphorus.atomistry.com/physical_properties.html
Physical Properties of Phosphorus. The volume which is occupied by the atom of phosphorus when it is combined with one or two other elements to form liquid compounds has been deduced from the molar volumes of such compounds on the assumption that the other elements possess constant and characteristic atomic volumes in these compounds. Thus, from the molar volumes of P. 205; therefore P. 1009 According to Thorpe also P. 1088 The combination with chlorine under conditions of equal vapour pressure is accomp...
Chemical properties of Boron
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Perboric Acid and Perborates. Chemical properties of Boron. From the reactions of boron it is clear that the binary compounds of boron are very stable substances. The heats of formation (H.F.), given below, fully bear out this conclusion: -. HF = 234.9 Cals. B. HF = 93.3 Cals. B. HF = 43.2 Cals. [ B. HF = 82.6 Cals. [ B. HF = 272.6 Cals. May perhaps contain pentad boron and be formulated as follows: -. The existence of a fairly stable hydride, B. Which would accordingly be written.
Mercury Production
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Ore processing includes oxidizing roasting of cinnabar:. Roast gas pass through dust chamber and enter the tubular cooler made of stainless steel or Monel metal. Liquid mercury. Drips into iron receivers. It is refined as the liquid mercury. Thread flows through the 1-1.5 m tall tower with 10% H. Flush with water, dried up and sublimated in vacuum. Hydrometallurgical extraction of mercury. From ores and concentrates is also possible. The process includes Hg. By aluminium. Methods of mercury production.
Physical Properties Tantalum
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The linear coefficient of expansion per C. from 0 to 400 C. is approximately 6.46 10. As determined with a Fizeau dilatometer; this figure is less than that given by platinum and enables tantalum to be fused into glass. An earlier determination over the range 0 to 50 C. gave a linear expansion of 7.9 10. The cubical coefficient of expansion is 24 10. The atomic volume is 10.9, and the calculated internal pressure of the atom, using the last two figures, is 455,000 megabars.
Tantalum Production
http://tantalum.atomistry.com/production.html
The most of produced tantalum. Is obtained from pyrochlore and tantalite-columbite. Concentrates, which are separated from tin smelting slag by gravitation and flotation methods as well as via electromagnetic and radiometric separation. Ta. Concentrations after enrichment reaches 50%. Concentrates and slags are processed until Ta. From which tantalum metal. Is produced. Concentrates and slags are leached by hydrofluoric acid with following refining. Niobium and tantalum. After that it is roasted until Ta.
Tantalum in PDB, part 1 (1-7), PDB files 1dd4 - 3enh
http://tantalum.atomistry.com/pdb1-7.html
Tantalum in PDB, part 1 (1-7), PDB files 1dd4 - 3enh. Experimental structures of coordination spheres of Tantalum (Ta) in bioorganic molecules from X-Ray and NMR experiments. Coordination spheres were calculated with 5.0 Angstroms radius around Tantalum atoms. PDB files 1-7 (1dd4 - 3enh):. Crystal Structure of Ribosomal Protein L12 From Thermotoga Maritim. Crystal Structure of Calcium/Calmodulin-Dependent Protein Kinase. Crystal Structure Of Fragment of Mouse Ubiquitin-Activating Enzyme.
Chemical Properties
http://niobium.atomistry.com/chemical_properties.html
When heated in hydrogen, pure, finely divided niobium is converted into a dark grey powder containing a maximum of 1.12 per cent, of hydrogen, which corresponds to a hydride Nb. The compounds of niobium are not so numerous as those of vanadium. The following oxides, Nb. Which can be alternatively written Nb. This formula cannot, however, be definitely accepted, as the experimental data do not exclude the approximate empirical formula Nb. And an acid ammonium niobium sulphate, ( N. The absorption of hydro...
Physical Properties of Niobium
http://niobium.atomistry.com/physical_properties.html
Physical Properties of Niobium.
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Atomistic Simulation Software Collection. Welcome to the database of atomistic simulation tools developed at Ohio State. This page links to pages describing software written for a variety of applications, which are all freely available for download. Electronic versions of the references for these tools are provided where possible. Alloy Potential Generator, "RAMPAGE". Main Developer: David Riegner, Logan Ward - Research Group: Windl. Main Developer: Logan Ward - Research Group: Windl. ABAQUS simulation o...
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Atomistic Computer Simulations: A Practical Guide. Many books explain the theory of atomistic computer simulations; this book teaches you how to run them. This book includes checklists for planning projects, analyzing output files, and for troubleshooting, as well as pseudo keywords and case studies. These pages will be regularly updated with blog posts about atomistic simulations; please follow the RSS feed or @MillionAtomMan. On Twitter for notification. Orbital-free DFT with PAWs. January 21, 2015.
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