.<; VVlLDK, Atomic Weights, Neon and Heliuvi. 



H« 



H = I Difif 



- 6 



H2« 



He = 2 Diff. 

 - 6 



o . o . 7 Li = 7 



o-59t 7* 



i6 



o . o . 8 = Be = 8 



1-64 9-2 



i6 



1x23. o = Na = 23 iX24-o = Mg= 24 



^ 098 23 1-74 24 



-16 -16 



2X23-7 = K =39 



0-86 39 



3x23 — 7 = Cu = 62 



S-9 633 



23 



2x24 — 8 = Ca = 40 



1-8 4^ 



24 



3x24 — 8 = Zn = 64 

 7-2 65 



-24 



4X23-7 = Rb = 85 4X24-8 = Sr = 88 



23 



5X23-7 = Ag =108 



IO-6 108 



2'54 ^ri 



5 x24-8 = Cd =112 



S-69 112 



24 



Further inspection of the table will show that, in con- 

 sequence of the law of multiple proportions by which the 

 atomic weights of the series are determined, there is a 



Accepted Atomic Weights. f Specific Gravities. J Estimated. 



