Tables 597 and 598 



TABLE 597. — Periodic System of the Elements 



485 



He 



4 



Ne 



Kr 



82 



X 



128 



Em 



(222) 



R2O 



Li 



7 



Na 

 23 



K 

 39 



Cu 



64 



Rb 



85 



108 



Cs 

 133 



Sa 

 ISO 



Tm 

 168 



Au 

 197 



II 



RO 



Mg 



24 



Ca 



40 



Sr 



Cd 

 112 



Ba 

 137 



Eu 



152 



Yb 

 174 



Hg 

 201 



Ra 



226 



III 



R 2 0j 



Ga 

 70 



Yt 



In 

 US 



La 

 139 



Gd 

 '57 



Lu 



175 



Tl 

 204 



Ac 

 (227) 



IV 



RO2 



RH 4 



Ti 



Ge 



72 



Zr 



Sn 

 "9 



Ce 

 140 



Tb 



•59 



Pb 



207 



Th 



232 



Ri0 6 



RH t 



As 



75 



Cb 

 94 



Sb 

 120 



Pr 

 141 



Ds 



162 



Ta 

 181 



Bi 



208 



UrXj 



VI 



ROj 



RH 



Cr 



52 



Mo 

 96 



Te 



128 



Nd 

 144 



Er 

 168 



W 



184 



Po 



210 



U 

 238 



VII 



R207 



RH 



Mn 

 55 



F 

 19 



CI 

 3S 



Br 



So 



I 



127 



RO« =®8r Oxides. 



— =g& Hydrides. 



Fe Ni Co 

 56 59 59 



Ru Rh Pd 

 102 103 107 



Os Ir Pt 

 191 193 195 



TABLE 598. — Atomic Numbers 



1 Hydrogen 



2 Helium 



3 Lithium 



4 Beryllium t 



5 Boron 



6 Carbon 



7 Nitrogen 



8 Oxygen 



9 Fluorine 



10 Neon 



1 1 Sodium 



12 Magnesium 



13 Aluminum 



14 Silicon 



15 Phosphorus 



16 Sulphur 



17 Chlorine 



18 Argon 



19 Potassium 



* Bohemium 



20 Calcium 



21 Scandium 



22 Titanium 

 2$ Vanadium 



24 Chromium 



25 Manganese 



26 Iron 



27 Cobalt 



28 Nickel 



29 Copper 



30 Zinc 



31 Gallium 



32 Germanium 



33 Arsenic 



34 Selenium 



35 Bromine 



36 Krypton 



37 Rubidium 



38 Strontium 



39 Yttrium 



40 Zirconium 



41 Niobium t 



42 Molybdenum 



43 Masurium 



44 Ruthenium 



45 Rhodium 



46 Palladium 



47 Silver 



48 Cadmium 



49 Indium 



50 Tin 



51 Antimony 



52 Tellurium 



53 Iodine 



54 Xenon 



55 Cesium 



56 Barium 



57 Lanthanum 



t Glucinium. 



58 Cerium 



59 Praseodymium 



60 Neodymium 



61 Illinium 



62 Samarium 



63 Europium 



64 Gadolinium 



65 Terbium 



66 Dysprosium 



67 Holmium 



68 Erbium 



69 Thulium 



70 Ytterbium 



71 Lutecium 



72 Hafnium 



73 Tantalum 



74 Tungsten 



75 Rhenium * 



76 Osmium 



77 Iridium 



78 Platinum 



79 Gold 



80 Mercury 



81 Thalium 



82 Lead 



83 Bismuth 



84 Polonium 



85 Alabamine 



86 Radon _ 



87 Virginium 



88 Radium 



89 Actinium 



90 Thorium 



91 Protactinium 



92 Uranium 



t Columbium. 



Smithsonian Tables 



