H 1 1.00794 63.04 63.79 1.2 He 2 4.0026 94.32 89.95 4.63 C 6 12.0108 42.7 43.01 0.72 N 7 14.0067 37.99 38.23 0.64 O 8 15.9994 34.24 34.46 0.64 F 9 18.9984 32.93 33.16 0.69 Ne 10 20.1797 28.93 29.15 0.77 Na 11 22.9897 27.74 27.97 0.84 Mg 12 24.305 25.03 25.27 0.96 Al 13 26.9815 24.01 24.26 1.06 Si 14 28.0855 21.82 22.08 1.18 P 15 30.9737 21.21 21.47 1.25 S 16 32.065 19.5 19.76 1.35 Cl 17 35.453 19.28 19.56 1.47 Ar 18 39.948 19.55 19.86 1.57 K 19 39.0983 17.32 17.6 1.64 Ca 20 40.078 16.14 16.43 1.78 Ti 22 47.867 16.16 16.47 1.94 Cr 24 51.9961 14.94 15.25 2.09 Fe 26 55.845 13.84 14.14 2.17 Ni 28 58.6934 12.68 12.97 2.27 Cu 29 63.546 12.86 13.16 2.34 Zn 30 65.38 12.43 12.72 2.35 Ag 47 107.868 8.97 9.17 2.26 Pt 78 195.084 6.54 6.52 0.38 Au 79 196.967 6.46 6.43 0.53 Pb 82 207.2 6.37 6.31 0.93