50 



THE ROYAL SOCIETY OF CANADA 



Part I — The Magnetic Properties of the Elements of the Periodic System 



As a first step in the study of the magnetic properties of the 

 elements, a table of the elements was prepared in which were inserted 

 the values of the atomic susceptibilities, w^hich is the product of the 

 specific magnetic susceptibility and the atomic weight. The results 

 are recorded in Table I, which contains the symbols of the elements, 

 their atomic numbers and their atomic susceptibilities, multiplied by 

 10^. The values of the specific magnetic susceptibilities used in these 

 calculations were taken from the results of Honda^ and Owen,'^ which 

 have been regarded as the most accurate available. 



TABLC I 



A glance at this table showed some rather striking relations, 

 not only within the families of elements, but more general relations 

 pertaining to the whole system of the elements. It should be re- 

 marked that the usual practice has been followed in writing the 

 symbols for some elements on the left-hand side of the vertical column 

 and the symbols for others on the right-hand side of the same column. 

 This custom has been dictated by the similarities of chemical pro- 

 perties of the elements, as in Group I of Lithium, Sodium, Potassium, 

 Rubidium and Caesium on the one hand, and of Copper, Silver and 

 Gold on the other hand. Further, the paramagnetic elements have 

 been indicated by a plus sign and the diamagnetic elements by a 

 minus sign, in accordance with the usual notation. 



IK. Honda, Annalen der Physik, 32, 1027, 1910. 

 2M. Owen, Annalen der Physik, 37, 657, 1912. 



