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The Toxicologist's Pocket Handbook

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274 <strong>The</strong> Toxicologist’s <strong>Pocket</strong> <strong>Handbook</strong>Table 209 Standard Atomic Weights (Continued)NameSym.AtomicNumberAtomicWeightFootnotesPotassium (Kalium) K 19 39.0983(1)Praseodymium Pr 59 140.90765(3)Promethium* Pm 61 AProtactinium* Pa 91Radium* Ra 88 ARadon* Rn 86 ARhenium Re 75 186.207(1)Rhodium Rh 45 102.90550(3)Rubidium Rb 37 85.4678(3) gRuthenium Ru 44 101.07(2) gSamarium Sm 62 150.36(3) gScandium Sc 21 44.955910(9)Selenium Se 34 78.96(3)Silicon Si 14 28.0855(3) rSilver Ag 47 107.8682(2) gSodium (Natrium) Na 11 22.989768(6)Strontium Sr 38 87.62(1) g rSulfur S 16 32.066(6) rTantalum Ta 73 180.9479(1)Technetium* Tc 43 ATellurium Te 52 127.60(3) gTerbium Tb 65 158.92534(3)Thallium Tl 81 204.3833(2)Thorium* Th 90 232.038(1) g ZThulium Tm 69 168.93421(3)Tin Sn 50 118.710(7) gTitanium Ti 22 47.88(3)Tungsten (Wolfram) W 74 183.85(3)Unnilquadium Unq 104 AUnnilpentium Unp 105 AUnnihexium Unh 106 AUnnilseptium Uns 107 AUranium* U 92 238.0289(1) g m ZVanadium V 23 50.9415(1)Xenon Xe 54 131.29(2) g m

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