The Number of Possible Elements and Mendeléeff’s ‘Cubic’ Periodic System in Nature 87, 1911, p. 78
London: 1911. 1st Edition. FIRST EDITION OF VAN DEN BROEK’S HYPOTHESIS THAT “THE NUCLEAR CHARGE OF A PARTICULAR ELEMENT IS DETERMINED BY ITS PLACE IN THE PERIODIC TABLE, ITS ATOMIC NUMBER, NOT ITS ATOMIC WEIGHT” (Kumar, Quantum, 88). Just one month after Rutherford put forth his model of the atom..... More