| 0 |
neutron |
1 |
$latex \textit{\textbf{n}}$ |
1.008 665 |
$latex \beta ^{-}$ |
10.37 min |
| 1 |
Hydrogen |
1 |
$latex ^{1} \textbf{H}$ |
1.007 825 |
99.985% |
|
|
Deuterium |
2 |
$latex ^{2}\textbf{H or D}$ |
2.014 102 |
0.015% |
|
|
Tritium |
3 |
$latex ^{3}\textbf{H or T}$ |
3.016 050 |
$latex \beta ^{-}$ |
12.33 y |
| 2 |
Helium |
3 |
$latex ^{3} \textbf{He}$ |
3.016 030 |
$latex 1.38 \times 10^{-4} \% $ |
|
|
|
4 |
$latex ^{4} \textbf{He}$ |
4.002 603 |
$latex \approx 100 \% $ |
|
| 3 |
Lithium |
6 |
$latex ^6 \textbf{Li}$ |
6.015 121 |
7.5% |
|
|
|
7 |
$latex ^7 \textbf{Li}$ |
7.016 003 |
92.5% |
|
| 4 |
Beryllium |
7 |
$latex ^7 \textbf{Be}$ |
7.016 928 |
EC |
53.29 d |
|
|
9 |
$latex ^9 \textbf{Be}$ |
9.012 182 |
100% |
|
| 5 |
Boron |
10 |
$latex ^{10} \textbf{B}$ |
10.012 937 |
19.9% |
|
|
|
11 |
$latex ^{11} \textbf{B}$ |
11.009 305 |
80.1% |
|
| 6 |
Carbon |
11 |
$latex ^{11} \textbf{C}$ |
11.011 432 |
EC, $latex \beta ^{+}$ |
|
|
|
12 |
$latex ^{12} \textbf{C}$ |
12.000 000 |
98.90% |
|
|
|
13 |
$latex ^{13} \textbf{C}$ |
13.003 355 |
1.10% |
|
|
|
14 |
$latex ^{14} \textbf{C}$ |
14.003 241 |
$latex \beta ^{-}$ |
5730 y |
| 7 |
Nitrogen |
13 |
$latex ^{13} \textbf{N}$ |
13.005 738 |
$latex \beta ^{+}$ |
9.96 min |
|
|
14 |
$latex ^{14} \textbf{N}$ |
14.003 074 |
99.63% |
|
|
|
15 |
$latex ^{15} \textbf{N}$ |
15.000 108 |
0.37% |
|
| 8 |
Oxygen |
15 |
$latex ^{15} \textbf{O}$ |
15.003 065 |
EC, $latex \beta ^{+}$ |
122 s |
|
|
16 |
$latex ^{16} \textbf{O}$ |
15.994 915 |
99.76% |
|
|
|
18 |
$latex ^{18} \textbf{O}$ |
17.999 160 |
0.200% |
|
| 9 |
Fluorine |
18 |
$latex ^{18} \textbf{F}$ |
18.000 937 |
EC, $latex \beta ^{+}$ |
1.83 h |
|
|
19 |
$latex ^{19} \textbf{F}$ |
18.998 403 |
100% |
|
| 10 |
Neon |
20 |
$latex ^{20} \textbf{Ne}$ |
19.992 435 |
90.51% |
|
|
|
22 |
$latex ^{22} \textbf{Ne}$ |
21.991 383 |
9.22% |
|
| 11 |
Sodium |
22 |
$latex ^{22} \textbf{Na}$ |
21.994 434 |
$latex \beta ^{+}$ |
2.602 y |
|
|
23 |
$latex ^{23} \textbf{Na}$ |
22.989 767 |
100% |
|
|
|
24 |
$latex ^{24} \textbf{Na}$ |
23.990 961 |
$latex \beta ^{-}$ |
14.96 h |
| 12 |
Magnesium |
24 |
$latex ^{24} \textbf{Mg}$ |
23.985 042 |
78.99% |
|
| 13 |
Aluminum |
27 |
$latex ^{27} \textbf{Al}$ |
26.981 539 |
100% |
|
| 14 |
Silicon |
28 |
$latex ^{28} \textbf{Si}$ |
27.976 927 |
92.23% |
2.62h |
|
|
31 |
$latex ^{31} \textbf{Si}$ |
30.975 362 |
$latex \beta ^{-}$ |
|
| 15 |
Phosphorus |
31 |
$latex ^{31} \textbf{P}$ |
30.973 762 |
100% |
|
|
|
32 |
$latex ^{32} \textbf{P}$ |
31.973 907 |
$latex \beta ^{-}$ |
14.28 d |
| 16 |
Sulfur |
32 |
$latex ^{32} \textbf{S}$ |
31.972 070 |
95.02% |
|
|
|
35 |
$latex ^{35} \textbf{S}$ |
34.969 031 |
$latex \beta ^{-}$ |
87.4 d |
| 17 |
Chlorine |
35 |
$latex ^{35} \textbf{Cl}$ |
34.968 852 |
75.77% |
|
|
|
37 |
$latex ^{37} \textbf{Cl}$ |
36.965 903 |
24.23% |
|
| 18 |
Argon |
40 |
$latex ^{40} \textbf{Ar}$ |
39.962 384 |
99.60% |
|
| 19 |
Potassium |
39 |
$latex ^{39} \textbf{K}$ |
38.963 707 |
93.26% |
|
|
|
40 |
$latex ^{40} \textbf{K}$ |
39.963 999 |
0.0117%, EC, $latex \beta ^{-}$ |
$latex 1.28 \times 10^9 \text{y}$ |
| 20 |
Calcium |
40 |
$latex ^{40} \textbf{Ca}$ |
39.962 591 |
96.94% |
|
| 21 |
Scandium |
45 |
$latex ^{45} \textbf{Sc}$ |
44.955 910 |
100% |
|
| 22 |
Titanium |
48 |
$latex ^{48} \textbf{Ti}$ |
47.947 947 |
73.8% |
|
| 23 |
Vanadium |
51 |
$latex ^{51} \textbf{V}$ |
50.943 962 |
99.75% |
|
| 24 |
Chromium |
52 |
$latex ^{52} \textbf{Cr}$ |
51.940 509 |
83.79% |
|
| 25 |
Manganese |
55 |
$latex ^{55} \textbf{Mn}$ |
54.938 047 |
100% |
|
| 26 |
Iron |
56 |
$latex ^{56} \textbf{Fe}$ |
55.934 939 |
91.72% |
|
| 27 |
Cobalt |
59 |
$latex ^{59} \textbf{Co}$ |
58.933 198 |
100% |
|
|
|
60 |
$latex ^{60} \textbf{Co}$ |
59.933 819 |
$latex \beta ^{-}$ |
5.271 y |
| 28 |
Nickel |
58 |
$latex ^{58} \textbf{Ni}$ |
57.935 346 |
68.27% |
|
|
|
60 |
$latex ^{60} \textbf{Ni}$ |
59.930 788 |
26.10% |
|
| 29 |
Copper |
63 |
$latex ^{63} \textbf{Cu}$ |
62.939 598 |
69.17% |
|
|
|
65 |
$latex ^{65} \textbf{Cu}$ |
64.927 793 |
30.83% |
|
| 30 |
Zinc |
64 |
$latex ^{64} \textbf{Zn}$ |
63.929 145 |
48.6% |
|
|
|
66 |
$latex ^{66} \textbf{Zn}$ |
65.926 034 |
27.9% |
|
| 31 |
Gallium |
69 |
$latex ^{69} \textbf{Ga}$ |
68.925 580 |
60.1% |
|
| 32 |
Germanium |
72 |
$latex ^{72} \textbf{Ge}$ |
71.922 079 |
27.4% |
|
|
|
74 |
$latex ^{74} \textbf{Ge}$ |
73.921 177 |
36.5% |
|
| 33 |
Arsenic |
75 |
$latex ^{75} \textbf{As}$ |
74.921 594 |
100% |
|
| 34 |
Selenium |
80 |
$latex ^{80} \textbf{Se}$ |
79.916 520 |
49.7% |
|
| 35 |
Bromine |
79 |
$latex ^{79} \textbf{Br}$ |
78.918 336 |
50.69% |
|
| 36 |
Krypton |
84 |
$latex ^{84} \textbf{Kr}$ |
83.911 507 |
57.0% |
|
| 37 |
Rubidium |
85 |
$latex ^{85} \textbf{Rb}$ |
84.911 794 |
72.17% |
|
| 38 |
Strontium |
86 |
$latex ^{86} \textbf{Sr}$ |
85.909 267 |
9.86% |
|
|
|
88 |
$latex ^{88} \textbf{Sr}$ |
87.905 619 |
82.58% |
|
|
|
90 |
$latex ^{90} \textbf{Sr}$ |
89.907 738 |
$latex \beta ^{-}$ |
28.8 y |
| 39 |
Yttrium |
89 |
$latex ^{89} \textbf{Y}$ |
88.905 849 |
100% |
|
|
|
90 |
$latex ^{90} \textbf{Y}$ |
89.907 152 |
$latex \beta ^{-}$ |
64.1 h |
| 40 |
Zirconium |
90 |
$latex ^{90} \textbf{Zr}$ |
89.904 703 |
51.45% |
|
| 41 |
Niobium |
93 |
$latex ^{93} \textbf{Nb}$ |
92.906 377 |
100% |
|
| 42 |
Molybdenum |
98 |
$latex ^{98} \textbf{Mo}$ |
97.905 406 |
24.13% |
|
| 43 |
Technetium |
98 |
$latex ^{98} \textbf{Tc} $ |
97.907 215 |
$latex \beta ^{-}$ |
$latex 4.2 \times 10^6 \text{y} $ |
| 44 |
Ruthenium |
102 |
$latex ^{102} \textbf{Ru}$ |
101.904 348 |
31.6% |
|
| 45 |
Rhodium |
103 |
$latex ^{103} \textbf{Rh}$ |
102.905 500 |
100% |
|
| 46 |
Palladium |
106 |
$latex ^{106} \textbf{Pd}$ |
105.903 478 |
27.33% |
|
| 47 |
Silver |
107 |
$latex ^{107} \textbf{Ag}$ |
106.905 092 |
51.84% |
|
|
|
109 |
$latex ^{109} \textbf{Ag}$ |
108.904 757 |
48.16% |
|
| 48 |
Cadmium |
114 |
$latex ^{114} \textbf{Cd}$ |
113.903 357 |
28.73% |
|
| 49 |
Indium |
115 |
$latex ^{115} \textbf{In}$ |
114.903 880 |
95.7%, $latex \beta ^{-}$ |
$latex 4.4 \times 10^{14} \text{y}$ |
| 50 |
Tin |
120 |
$latex ^{120} \textbf{Sn}$ |
119.902 200 |
32.59% |
|
| 51 |
Antimony |
121 |
$latex ^{121} \textbf{Sb}$ |
120.903 821 |
57.3% |
|
| 52 |
Tellurium |
130 |
$latex ^{130} \textbf{Te}$ |
129.906 229 |
33.8%, $latex \beta ^{-}$ |
$latex 2.5 \times 10^{21} \text{y}$ |
| 53 |
Iodine |
127 |
$latex ^{127} \textbf{I}$ |
126.904 473 |
100% |
|
|
|
131 |
$latex ^{131} \textbf{I}$ |
130.906 114 |
$latex \beta ^{-}$ |
8.040 d |
| 54 |
Xenon |
132 |
$latex ^{132} \textbf{Xe}$ |
131.904 144 |
26.9% |
|
|
|
136 |
$latex ^{136} \textbf{Xe}$ |
135.907 214 |
8.9% |
|
| 55 |
Cesium |
133 |
$latex ^{133} \textbf{Cs}$ |
132.905 429 |
100% |
|
|
|
134 |
$latex ^{134} \textbf{Cs}$ |
133.906 696 |
EC, $latex \beta ^{-}$ |
2.06 y |
| 56 |
Barium |
137 |
$latex ^{137} \textbf{Ba}$ |
136.905 812 |
11.23% |
|
|
|
138 |
$latex ^{138} \textbf{Ba}$ |
137.905 232 |
71.70% |
|
| 57 |
Lanthanum |
139 |
$latex ^{139} \textbf{La}$ |
138.906 346 |
99.91% |
|
| 58 |
Cerium |
140 |
$latex ^{140} \textbf{Ce}$ |
139.905 433 |
88.48% |
|
| 59 |
Praseodymium |
141 |
$latex ^{141} \textbf{Pr}$ |
140.907 647 |
100% |
|
| 60 |
Neodymium |
142 |
$latex ^{142} \textbf{Nd}$ |
141.907 719 |
27.13% |
|
| 61 |
Promethium |
145 |
$latex ^{145} \textbf{Pm}$ |
144.912 743 |
EC, $latex \alpha$ |
17.7 y |
| 62 |
Samarium |
152 |
$latex ^{152} \textbf{Sm}$ |
151.919 729 |
26.7% |
|
| 63 |
Europium |
153 |
$latex ^{153} \textbf{Eu}$ |
152.921 225 |
52.2% |
|
| 64 |
Gadolinium |
158 |
$latex ^{158} \textbf{Gd}$ |
157.924 099 |
24.84% |
|
| 65 |
Terbium |
159 |
$latex ^{159} \textbf{Tb}$ |
158.925 342 |
100% |
|
| 66 |
Dysprosium |
164 |
$latex ^{164} \textbf{Dy}$ |
163.929 171 |
28.2% |
|
| 67 |
Holmium |
165 |
$latex ^{165} \textbf{Ho}$ |
164.930 319 |
100% |
|
| 68 |
Erbium |
166 |
$latex ^{166} \textbf{Er}$ |
165.930 290 |
33.6% |
|
| 69 |
Thulium |
169 |
$latex ^{169} \textbf{Tm}$ |
168.934 212 |
100% |
|
| 70 |
Ytterbium |
174 |
$latex ^{174} \textbf{Yb}$ |
173.938 859 |
31.8% |
|
| 71 |
Lutecium |
175 |
$latex ^{175} \textbf{Lu}$ |
174.940 770 |
97.41% |
|
| 72 |
Hafnium |
180 |
$latex ^{180} \textbf{Hf}$ |
179.946 545 |
35.10% |
|
| 73 |
Tantalum |
181 |
$latex ^{181} \textbf{Ta}$ |
180.947 992 |
99.98% |
|
| 74 |
Tungsten |
184 |
$latex ^{184} \textbf{W}$ |
183.950 928 |
30.67% |
|
| 75 |
Rhenium |
187 |
$latex ^{187} \textbf{Re}$ |
186.955 744 |
62.6%, $latex \beta ^{-}$ |
$latex 4.6 \times 10^{10} \text{y}$ |
| 76 |
Osmium |
191 |
$latex ^{191} \textbf{Os}$ |
190.960 920 |
$latex \beta ^{-}$ |
15.4 d |
|
|
192 |
$latex ^{192} \textbf{Os}$ |
191.961 467 |
41.0% |
|
| 77 |
Iridium |
191 |
$latex ^{191} \textbf{Ir}$ |
190.960 584 |
37.3% |
|
|
|
193 |
$latex ^{193} \textbf{Ir}$ |
192.962 917 |
62.7% |
|
| 78 |
Platinum |
195 |
$latex ^{195} \textbf{Pt}$ |
194.964 766 |
33.8% |
|
| 79 |
Gold |
197 |
$latex ^{197} \textbf{Au}$ |
196.966 543 |
100% |
|
|
|
198 |
$latex ^{198} \textbf{Au}$ |
197.968 217 |
$latex \beta ^{-}$ |
2.696 d |
| 80 |
Mercury |
199 |
$latex ^{199} \textbf{Hg}$ |
198.968 253 |
16.87% |
|
|
|
202 |
$latex ^{202} \textbf{Hg}$ |
201.970 617 |
29.86% |
|
| 81 |
Thallium |
205 |
$latex ^{205} \textbf{Tl}$ |
204.974 401 |
70.48% |
|
| 82 |
Lead |
206 |
$latex ^{206} \textbf{Pb}$ |
205.974 440 |
24.1% |
|
|
|
207 |
$latex ^{207} \textbf{Pb}$ |
206.975 872 |
22.1% |
|
|
|
208 |
$latex ^{208} \textbf{Pb}$ |
207.976 627 |
52.4% |
|
|
|
210 |
$latex ^{210} \textbf{Pb}$ |
209.984 163 |
$latex \alpha $, $latex \beta ^{-}$ |
22.3 y |
|
|
211 |
$latex ^{211} \textbf{Pb}$ |
210.988 735 |
$latex \beta ^{-}$ |
36.1 min |
|
|
212 |
$latex ^{212} \textbf{Pb}$ |
211.991 871 |
$latex \beta ^{-}$ |
10.64 h |
| 83 |
Bismuth |
209 |
$latex ^{209} \textbf{Bi}$ |
208.980 374 |
100% |
|
|
|
211 |
$latex ^{211} \textbf{Bi}$ |
210.987 255 |
$latex \alpha $, $latex \beta ^{-}$ |
2.14 min |
| 84 |
Polonium |
210 |
$latex ^{210} \textbf{Po}$ |
209.982 848 |
$latex \alpha $ |
138.38 d |
| 85 |
Astatine |
218 |
$latex ^{218} \textbf{At}$ |
218.008 684 |
$latex \alpha $, $latex \beta ^{-}$ |
1.6 s |
| 86 |
Radon |
222 |
$latex ^{222} \textbf{Rn}$ |
222.017 570 |
$latex \alpha $ |
3.82 d |
| 87 |
Francium |
223 |
$latex ^{223} \textbf{Fr}$ |
223.019 733 |
$latex \alpha $, $latex \beta ^{-}$ |
21.8 min |
| 88 |
Radium |
226 |
$latex ^{226} \textbf{Ra}$ |
226.025 402 |
$latex \alpha $ |
$latex 1.60 \times 10^3 \text{y}$ |
| 89 |
Actinium |
227 |
$latex ^{227} \textbf{Ac}$ |
227.027 750 |
$latex \alpha $, $latex \beta ^{-}$ |
21.8 y |
| 90 |
Thorium |
228 |
$latex ^{228} \textbf{Th}$ |
228.028 715 |
$latex \alpha$ |
1.91 y |
|
|
232 |
$latex ^{232} \textbf{Th}$ |
232.038 054 |
100%, $latex \alpha $ |
$latex 1.41 \times 10^{10} \text{y}$ |
| 91 |
Protactinium |
231 |
$latex ^{231} \textbf{Pa}$ |
231.035 880 |
$latex \alpha $ |
$latex 3.28 \times 10^4 \text{y}$ |
| 92 |
Uranium |
233 |
$latex ^{233} \textbf{U}$ |
233.039 628 |
$latex \alpha $ |
$latex 1.59 \times 10^3 \text{y}$ |
|
|
235 |
$latex ^{235} \textbf{U}$ |
235.043 924 |
0.720%, $latex \alpha $ |
$latex 7.04 \times 10^8 \text{y}$ |
|
|
236 |
$latex ^{236} \textbf{U}$ |
236.045 562 |
$latex \alpha $ |
$latex 2.34 \times 10^7 \text{y}$ |
|
|
238 |
$latex ^{238} \textbf{U}$ |
238.050 784 |
99.2745%, $latex \alpha $ |
$latex 4.47 \times 10^9 \text{y}$ |
|
|
239 |
$latex ^{239} \textbf{U}$ |
239.054 289 |
$latex \beta ^{-}$ |
23.5 min |
| 93 |
Neptunium |
239 |
$latex ^{239} \textbf{Np}$ |
239.052 933 |
$latex \beta ^{-}$ |
2.355 d |
| 94 |
Plutonium |
239 |
$latex ^{239} \textbf{Pu}$ |
239.052 157 |
$latex \alpha $ |
$latex 2.41 \times 10^4 \text{y} $ |
| 95 |
Americium |
243 |
$latex ^{243} \textbf{Am}$ |
243.061 375 |
$latex \alpha $, fission |
$latex 7.37 \times 10^3 \text{y}$ |
| 96 |
Curium |
245 |
$latex ^{245} \textbf{Cm}$ |
245.065 483 |
$latex \alpha $ |
$latex 8.50 \times 10^3 \text{y}$ |
| 97 |
Berkelium |
247 |
$latex ^{247} \textbf{Bk} $ |
247.070 300 |
$latex \alpha $ |
$latex 1.38 \times 10^3 \text{y}$ |
| 98 |
Californium |
249 |
$latex ^{249} \textbf{Cf} $ |
249.074 844 |
$latex \alpha $ |
351 y |
| 99 |
Einsteinium |
254 |
$latex ^{254} \textbf{Es}$ |
254.088 019 |
$latex \alpha $, $latex \beta ^{-}$ |
276 d |
| 100 |
Fermium |
253 |
$latex ^{253} \textbf{Fm}$ |
253.085 173 |
EC, $latex \alpha $ |
3.00 d |
| 101 |
Mendelevium |
255 |
$latex ^{255} \textbf{Md}$ |
255.091 081 |
EC, $latex \alpha $ |
27 min |
| 102 |
Nobelium |
255 |
$latex ^{255} \textbf{No} $ |
255.093 260 |
EC, $latex \alpha $ |
3.1 min |
| 103 |
Lawrencium |
257 |
$latex ^{257} \textbf{Lr}$ |
257.099 480 |
EC, $latex \alpha $ |
0.646 s |
| 104 |
Rutherfordium |
261 |
$latex ^{261} \textbf{Rf} $ |
261.108 690 |
$latex \alpha $ |
1.08 min |
| 105 |
Dubnium |
262 |
$latex ^{262} \textbf{Db}$ |
262.113 760 |
$latex \alpha $, fission |
34 s |
| 106 |
Seaborgium |
263 |
$latex ^{263} \textbf{Sg}$ |
263.11 86 |
$latex \alpha $, fission |
0.8 s |
| 107 |
Bohrium |
262 |
$latex ^{262} \textbf{Bh}$ |
262.123 1 |
$latex \alpha $ |
0.102 s |
| 108 |
Hassium |
264 |
$latex ^{264} \textbf{Hs}$ |
264.128 5 |
$latex \alpha $ |
0.08 ms |
| 109 |
Meitnerium |
266 |
$latex ^{266} \textbf{Mt}$ |
266.137 8 |
$latex \alpha $ |
3.4 ms |
| Table 1: Atomic Masses |
