290 ATOMIC NUMBERS. 



III. TABLE OF ATOMIC NUMBERS. 



Hence also the number of atoms of pantogen contained in 

 one atom of any given element, is exactly two times the true 

 atomic weight of that element, the atomic weight of carbon- 

 diamond being taken at 12 exactly. 



This number we call the atomic number (Atomzahl in 

 German); we have also called it atogramme in our Pro- 

 gramme of 1867. Compare pp. 217-218, supra. 



While this is not the place for the study of this most 

 important subject, which we shall take up in "another work, 

 we deem it sufficiently interesting to give a table of atomic 

 numbers for the most important chemical elements. 



The arrangement and order of the elements, we take 

 from Part III, pp. 205-256, of our True Atomic Weights, 

 1894, and from pp. 200-201 of our Introduction to General 

 Chemistry, 1897. 



Table of Atomic Numbers. 



I. THE CARBON SYSTEM; from Positive to Negative. 



Lighter, Earthy Metals : 



1 Kaloids, Ka Ka 78 Rb Cs 266 



2 Calcoids, Xa Ca 80 Sr - Ba 274 



II. THE IRON-SYSTEM; from Negative to Positive. 



Va 102 

 Molybdoids, MX Cr 104 Mo 192 Wo 368 



Mn no 

 Sideroids, Sd Fe 112 Ru Ir 386 



Ni 116 



Palladoids, Ud Co Pd Pt 390 



Cuproids, Kl) Cu 127 Ag 216 Au 394 



