165 



SYMBOLS AND ATOMIC MASSES ( 

 ELEMENTS 



WEIGHTS") OF THE 



NAME 



SYMBOL 



Neon, Ne 



Nickel, Ni 



Niobium, Nb 



Nitrogen, N 



Osmium, ' Os 



Oxygen, ' O 



Palladium, ' Pd 



Phosphorus, P 



Platinum, Pt 



Polonium, ? Po 



Potassium, (Kalium) ... K 



Praseodymium, Pr 



Radium, ? ' Ka 



Rhodium, Ro 



Rubidium, Rb 



Ruthenium, ' Ru 



Samarium, ? Sa 



Scandium, Sc 



Selenium, Se 



Silicon, Si 



Silver, (Argentum) . . . Ag 



Sodium, (Natrium) . . . Na 



Strontium, Sr 



Sulphur, . . S 



Tantalum, Ta 



Tellurium, Te 



Terbium . ? Tb 



Thallium, 



Thorium, Th 



Thulium, . I Tu 



Tin (Stannum) Sn 



Titanium Ti 



Tungsten (Wolfram) ... W 



Uranium, Ur 



Vanadium, V 



Xenon, X 



Ytterbium, . ? . . . . Yb 



Yttrium, . Yt 



Zinc, Zn 



Zirconium, Zr 



ATOMIC 

 WEIGHT 



19.9 

 58.3 



93.3 

 13.93 



189.6 

 15.88 



105.2 

 30.77 



193.3 



? 

 38.86 



139.4 

 



102.2 

 84.76 



100.9 



148.9 

 43.8 

 78.5 

 28.2 



107.12 

 22.88 

 86.94 

 31.83 



181.6 



126. 



158.8 



202.6 



230.8 



170. 



117.6 

 47.7 



182.6 



237.7 

 50.8 



127. 



172. 

 88.3 

 64.9 

 90. 



AT. WT. 



(approx.) 



14. 

 16. 



31. 

 193.5 



39. 



28. 

 107. 

 23. 

 87. 

 32. 



117.5 



65. 



