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References
Proc. Phys. Soc., 1921, 34, p. 35.
Trans. Faraday Soc., 1922, 17, 720.
Phil. Mag., 1899, 48, 331.
Proc. Soc. Phys. Bordeaux, April 1904; compare Smithsonian Inst. Report, 1913, 261.
J. Amer. Chem. Soc., 1917, 39, 1848.
The more exact measurements of Adam (Proc. R.S., 1922, A, 101, 452, 516 et seq.) have shown that the sectional area of the hydrocarbon chain is 21.0 Å.U., but that the ‘head’ of the molecule occupies an area of 21.7 Å.U. in the alcohols, and of 25.1 Å.U. in the fatty acids.
J.C.S., 1924, 125, 500.
Our exact knowledge of the wave-length of X-rays was formerly limited in the upward direction to about 15 Å.U., because no suitable crystals of larger molecular dimensions were available to provide a grating for their investigation. Thoraeus and Siegbahn (Ark. f. Mat. Astron. och Fysik, Stockholm, 1925, 19, 12), however, have recently measured wave-lengths up to 21 Å.U. by using as a grating a crystal of palmitic acid for which 2d = 71.19 Å.U.
Bragg and Morgan, Proc. R.S., 1923, A, 104, 437.
Bragg, Proc. Phys. Soc., 1922, 34, 98.
James and Wood, Manchester Memoirs, 1924–5, 69, No. 5.
Trans. Faraday Soc., 1923, 18, 285. In these symmetrical formulæ the central atom carries only a sextet of electrons: this condition is, therefore, probably unstable except in the crystals, where the anion is surrounded symmetrically by six oppositely charged cations.
Bernal, Proc. R.S., 1924, A, 106, 749; Hull, Phys. Rev., 1917, 10, 661; Debye and Scherrer, Phys. Zeitschr., 1917, 18, 291.
Chemistry and Industry, March 9, 1923, 42, 224. This projection, which I suggested in 1923 as a substitute for that used by Werner, has the same hexagonal outline as the diagram commonly used to represent the derivatives of benzene. It has the advantage of showing clearly that the metallic atom in the cobalti-oxalates is dissymmetric, but not asymmetric, since the model has one axis of 3-fold symmetry and three axes of 2-fold symmetry.
Wyckoff, J.A.C.S., 1922, 44, 1239.
Ostwald, “B.A. Report”, 1980, 333.
NATURE, Dec. 17, 1896, p. 151.
Phil. Mag., 1904, 7, p. 262.
J.C.S., 1908, 93, 774.
See especially Kossel, Ann. d. Phys., 1916, 49, 229.
G. N. Lewis, J.A.C.S., 1916, 38, 762; “Valence”, 1923, p. 74.
Chem. and Ind., March 28, 1924, 43, 323.
An interpretation of the periodic system, based upon the view that each planetary electron in the atom occupies a unique type of orbit characterised by four quantum numbers, has recently been described by Landé (Die Naturwissenschaften, July 1925, 13, 604); see also Sommerfeld (Phys. Zeits., Jan. 1, 1925, 26, 70–74), and Pauli (Zeits. f. Physik, 1925, 31, 765–782).
Ann, 1899, 306, 87.
J.C.S., 1923, 123, 822.
Trans. Faraday Soc., 1923, 18, 285; Phil. Mag., 1923, 45, 1105.
J.C.S., 1924, 125, 1177.
Sugden, J.C.S., 1925, 127, 1525.
J.C.S., 1925, 127.
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LOWRY, T. Electrons, Atoms and Molecules. Nature 117, 33–40 (1926). https://doi.org/10.1038/117033a0x
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DOI: https://doi.org/10.1038/117033a0x