in the Periodic Series of the Elements. 



107 



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Pr 

 Xd 



Ce 

 La 

 Ba 



Cs 



r 



Te 

 8b 

 Sn 

 In 

 Cd 



Ag 

 Pd 

 Eo 

 Ru 



#• 



Mo 

 Kb 

 Zr 

 Y 



Sr 



Rb 



Br 



3e 



As 



Ge 



Ga 



Zn 



Cu 



Hi 



Co 



Fe 



Mn 



Cr 



V 



Ti 



Sc 



Ca 



K 



CI 



S 



P 



Si 



Al 



Mg 



Ha. 



P 



O 



H 



C 



B 



Be 



Li 





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