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Appendix A 1551
  Atomic Number, Z
Name
   Atomic Mass Symbol Atomic Number, A Mass (u)
   Percent Abundance or Half-life, Decay Mode t1/2
  74  73.921 177 36.5%
     33 Arsenic 75  74.921 594 100%
     34 Selenium 80  79.916 520 49.7%
     35 Bromine 79  78.918 336 50.69%
     36 Krypton 84  83.911 507 57.0%
     37 Rubidium 85  84.911 794 72.17%
     38 Strontium 86  85.909 267 9.86%
     88  87.905 619 82.58%
     90  89.907 738  28.8 y
     39 Yttrium 89  88.905 849 100%
90  89.907 152  64.1 h
          40 Zirconium 90  89.904 703 51.45%
     41 Niobium 93  92.906 377 100%
     42 Molybdenum 98  97.905 406 24.13%
     43 Technetium 98  97.907 215  
     44 Ruthenium 102  101.904 348 31.6%
     45 Rhodium 103  102.905 500 100%
     46 Palladium 106  105.903 478 27.33%
     47 Silver 107  106.905 092 51.84%
     109  108.904 757 48.16%
     48 Cadmium 114  113.903 357 28.73%
     49 Indium 115  114.903 880 95.7%,  
     50 Tin 120  119.902 200 32.59%
     51 Antimony 121  120.903 821 57.3%
     52 Tellurium 130  129.906 229 33.8%,  
     53 Iodine 127  126.904 473 100%
     131  130.906 114  8.040 d
     54 Xenon 132  131.904 144 26.9%
     136  135.907 214 8.9%
     55 Cesium 133  132.905 429 100%
     































































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