1 H 1,008 2 He 4,003 3 Li 6,94 4 Be 9,012 5 B 10,81 6 C 12,011 7 N 14,007 8 O 15,999 9 F 18,998 10 Ne 20,18 11 Na 22,99 12 Mg 24,305 13 Al 26,982 14 Si 28,085 15 P 30,974 16 S 32,06 17 Cl 35,45 18 Ar 39,948 19 K 39,098 20 Ca 40,078 21 Sc 44,956 22 Ti 47,867 23 V 50,942 24 Cr 51,996 25 Mn 54,938 26 Fe 55,845 27 Co 58,933 28 Ni 58,693 29 Cu 63,546 30 Zn 65,38 31 Ga 69,723 32 Ge 72,63 33 As 74,922 34 Se 78,971 35 Br 79,904 36 Kr 83,798 37 Rb 85,468 38 Sr 87,62 39 Y 88,906 40 Zr 91,224 41 Nb 92,906 42 Mo 95,95 43 Tc 98 44 Ru 101,07 45 Rh 102,91 46 Pd 106,42 47 Ag 107,87 48 Cd 112,41 49 In 114,82 50 Sn 118,71 51 Sb 121,76 52 Te 127,6 53 I 126,9 54 Xe 131,29 55 Cs 132,91 56 Ba 137,33 57 La 138,91 72 Hf 178,49 73 Ta 180,95 74 W 183,84 75 Re 186,21 76 Os 190,23 77 Ir 192,22 78 Pt 195,08 79 Au 196,97 80 Hg 200,59 81 Tl 204,38 82 Pb 207,2 83 Bi 208,98 84 Po 209 85 At 210 86 Rn 222 87 Fr 223 88 Ra 226 89 Ac 227 104 Rf 267 105 Db 268 106 Sg 269 107 Bh 270 108 Hs 277 109 Mt 278 110 Ds 281 111 Rg 282 112 Cn 285 113 Nh 286 114 Fl 289 115 Mc 290 116 Lv 293 117 Ts 294 118 Og 294 58 Ce 140,12 59 Pr 140,91 60 Nd 144,24 61 Pm 145 62 Sm 150,36 63 Eu 151,96 64 Gd 157,25 65 Tb 158,93 66 Dy 162,5 67 Ho 164,93 68 Er 167,26 69 Tm 168,93 70 Yb 173,05 71 Lu 174,97 90 Th 232,04 91 Pa 231,04 92 U 238,03 93 Np 237 94 Pu 244 95 Am 243 96 Cm 247 97 Bk 247 98 Cf 251 99 Es 252 100 Fm 257 101 Md 258 102 No 259 103 Lr 266 11 C-11 Z 6 14 C-14 Z 6 14 C-14 Z 6 13 N-13 Z 7 15 O-15 Z 8 18 F-18 Z 9 32 P-32 Z 15 33 P-33 Z 15 35 S-35 Z 16 51 Cr-51 Z 24 57 Co-57 Z 27 60 Co-60 Z 27 64 Cu-64 Z 29 67 Cu-67 Z 29 67 Ga-67 Z 31 68 Ga-68 Z 31 68 Ge-68 Z 32 75 Se-75 Z 34 82 Rb-82 Z 37 82 Sr-82 Z 38 89 Sr-89 Z 38 90 Sr-90 Z 38 86 Y-86 Z 39 90 Y-90 Z 39 89 Zr-89 Z 40 99 Mo-99 Z 42 99 Tc-99m Z 43 103 Pd-103 Z 46 111 In-111 Z 49 117 Sn-117m Z 50 123 I-123 Z 53 124 I-124 Z 53 125 I-125 Z 53 131 I-131 Z 53 137 Cs-137 Z 55 133 Ba-133 Z 56 153 Sm-153 Z 62 153 Gd-153 Z 64 166 Ho-166 Z 67 169 Yb-169 Z 70 177 Lu-177 Z 71 188 W-188 Z 74 186 Re-186 Z 75 188 Re-188 Z 75 192 Ir-192 Z 77 201 Tl-201 Z 81 213 Bi-213 Z 83 211 At-211 Z 85 222 Rn-222 Z 86 223 Ra-223 Z 88 226 Ra-226 Z 88 225 Ac-225 Z 89 238 U-238 Z 92 239 Pu-239 Z 94