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A.6 Appendix A (22) Titanium 47 46.951 764 7.44 48 47.947 947 73.72 49 48.947 871 5.41 50 49.944 792 5.18 23 Vanadium V 50.941 5 48* 47.952 254 15.97 days 50* 49.947 163 0.250 1.5 ! 10 17 yr 51 50.943 964 99.750 24 Chromium Cr 51.996 1 48* 47.954 036 21.6 h 50 49.946 050 4.345 52 51.940 512 83.789 53 52.940 654 9.501 54 53.938 885 2.365 25 Manganese Mn 54.938 049 54* 53.940 363 312.1 days 55 54.938 050 100 26 Iron Fe 55.845 54 53.939 615 5.845 55* 54.938 298 2.7 yr 56 55.934 942 91.754 57 56.935 399 2.119 58 57.933 280 0.282 60* 59.934 077 1.5 ! 10 6 yr 27 Cobalt Co 58.933 200 59 58.933 200 100 60* 59.933 822 5.27 yr 28 Nickel Ni 58.693 4 58 57.935 348 68.076 9 59* 58.934 351 7.5 ! 10 4 yr 60 59.930 790 26.223 1 61 60.931 060 1.139 9 62 61.928 349 3.634 5 63* 62.929 673 100 yr 64 63.927 970 0.925 6 29 Copper Cu 63.546 63 62.929 601 69.17 65 64.927 794 30.83 30 Zinc Zn 65.39 64 63.929 147 48.63 66 65.926 037 27.90 67 66.927 131 4.10 68 67.924 848 18.75 70 69.925 325 0.62 31 Gallium Ga 69.723 69 68.925 581 60.108 71 70.924 705 39.892 32 Germanium Ge 72.61 70 69.924 250 20.84 72 71.922 076 27.54 73 72.923 459 7.73 74 73.921 178 36.28 76 75.921 403 7.61 33 Arsenic As 74.921 60 75 74.921 596 100 34 Selenium Se 78.96 74 73.922 477 0.89 76 75.919 214 9.37 77 76.919 915 7.63 Mass Number Atomic Chemical (*Indicates Half-Life Number Atomic Radioactive) Atomic Percent (If Radioactive) Z Element Symbol Mass (u) A Mass (u) Abundance T 1/2 Table of Atomic Masses a continued Table A.3 continued continued |