The Periodic Classification and the Problem of Chemical Evolution

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Whittaker, 1900 - Molecular evolution - 228 pages
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Page 153 - Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xc U2 (He 12s...
Page 28 - Avogadro's principle or hypothesis, which states that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules, was the extension of Dalton's Atomic Theory necessary to put the theoretical interpretation of chemistry on a solid foundation.
Page 150 - He 3 4 5 6 7 8 9 10 Li Be B C N 0 F Ne 11 12 13 14 15 16 17 18 Na Mg Al Si P s Cl Ar 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn...
Page xvi - Thus on this view we have in the cathode rays matter in a new state, a state in which the subdivision of matter is carried very much further than in the ordinary gaseous state : a state in which all matter — that is, matter derived from different sources such as hydrogen, oxygen, &c. — is of one and the same kind; this matter being the substance from which all the chemical elements are built up.
Page 192 - The hypothesis of molecular vortices is defined to be that which assumes, that each atom of matter consists of a nucleus or central point, enveloped by an elastic atmosphere, which is retained in its position by attractive forces, and that the elasticity due to heat arises from the centrifugal force of those atmospheres, revolving or oscillating about their nuclei or central points.
Page 167 - The explanation which seems to me to account in the most simple and straightforward manner for the facts is founded on a view of the constitution of the chemical elements which has been favourably entertained by many chemists : this view is that the atoms of the different chemical elements are different aggregations of atoms of the same kind.
Page 22 - If the elements are arranged in the order of their equivalents, with a few slight transpositions, as in the accompanying table, it will be observed that elements belonging to the same group usually appear on the same horizontal line. It will also be seen that the numbers of analogous elements generally differ either by 7 or by some multiple of 7 ; in other words, members of the same group stand to each other in the same relation as the extremities of one or more octaves in music.
Page 203 - Sodium Strontium . Sulphur Tantalum . Tellurium . Thallium . Thorium . Tin Titanium . Tungsten . Uranium . Vanadium Yttrium . Zinc Zirconium...
Page 167 - ... been considered as quite distinct. Important spectroscopic information pointing in this same direction has been gleaned through a long series of observations by Sir Norman Lockyer on the spectra of the fixed stars, and on the different spectra yielded by the same substance at different temperatures. These observations lend some support to the idea, so long entertained merely as a speculation, that all the various kinds of matter, all the various so-called chemical elements, may be built up in...
Page 202 - Aluminium Antimony Argon . Arsenic Barium Beryllium Bismuth Boron . Bromine Cadmium Caesium Calcium Carbon Cerium Chlorine Chromium Cobalt . Copper...

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