Nuklidemassar og halveringstider

Sjå også Den periodiske tabell og andre fysiske tabellar

Z (atomnr) / Grunnstoff Gr-A Nuklidemasse Halveringstid Utsend partikkel
1 Hydrogen H-1
H-2
H-3		 1,007825048
2,014101
3,0160493

12 a

β-
2 Helium He-3
He-4		 3,016029
4,002603		    
3 Litium Li-6
Li-7		 6,01512
7,01600		    
4 Beryllium Be-9 9,01218    
5 Bor B-10
B-11		 10,01294
11,00931		    
6 Karbon C-12
C-13
C-14		 12 (eksakt)
13,00335
14,00324

5730 a

β-
7 Nitrogen N-13
N-14
N-15		 13,00574
14,00307
15,00011		 9,97 min
 
 		 β+
 
 
8 Oksygen O-15
O-16
O-17		 15,00307
15,99491
16,99913		 124 s
 
 		 β+
 
 
9 Fluor F-18
F-19		 18,00094
18,99840		 109,7 min
 		 β+, K*
 
10 Neon Ne-20 19,99244    
11 Natrium Na-22
Na-23
Na-24		 21,99443
22,98977
23,99096		 2,6 a
 
15 h		 γ, β+, K*
 
γ, β-
12 Magnesium Mg-26 25,98259    
13 Aluminium Al-26
Al-27		 25,98689
26,98154		 7,1 · 105 a γ, β+, K*
14 Silisium Si-28 27,97693    
15 Fosfor P-31
P-32		 30,97376
31,97391		 14,3 d β-
16 Svovel S-32
S-35		 31,97207
34,96903		 87,4 d β-
17 Klor Cl      
18 Argon Ar      
19 Kalium K-39
K-40		 38,96371
39,96400		 1,3 · 109 a γ, β+, β-,K*
20 Kalsium Ca-40 39,96259    
21 Scandium Sc      
22 Titan Ti      
23 Vanadium V      
24 Krom Cr-55 54,94084 3,5 min γ, β-
25 Mangan Mn-55 54,93805    
26 Jern Fe-56 55,93494    
27 Kobolt Co-60 59,93382 5,27 a γ, β-
28 Nikkel Ni      
29 Kopar Cu-63 62,92960    
30 Sink Zn      
31 Gallium Ga      
32 Germanium Ge      
33 Arsen As      
34 Selen Se      
35 Brom Br-85 84,91561 2,87 min γ, β-
36 Krypton Kr-85
Kr-94		 84,91253
93,9343		 10,7 a
0,21 s		 γ, β-
γ, β-
37 Rubidium Rb      
38 Strontium Sr-90 89,90774 29,1 a β-
39 Yttrium Y      
40 Zirkonium Zr      
41 Niob Nb      
42 Molybden Mo      
43 Technetium Tc-99 98,90625 6,0 h γ
44 Ruthenium Ru      
45 Rhodium Rh      
46 Palladium Pd      
47 Sølv Ag      
48 Kadmium Cd      
49 Indium In      
50 Tinn Sn      
51 Antimon Sb      
52 Tellur Te      
53 Jod I-127
I-131		 126,90447
130,90613		 8,0 d γ, β-
54 Xenon Xe      
55 Cesium Cs-137 136,90708 30,2 a γ, β-
56 Barium Ba-138
Ba-144		 137,90523
143,92284		 11,4 s γ, β-
57 Lantan La-148 147,9314 1,1 s γ, β-
58 Cerium Ce      
59 Praseodym Pr      
60 Neodym Nd      
61 Promethium Pm      
62 Samarium Sm      
63 Europium Eu      
64 Gadolinium Gd      
65 Terbium Tb      
66 Dysprosium Dy      
67 Holmium Ho      
68 Erbium Er      
69 Thulium Tm      
70 Ytterbium Yb      
71 Lutetium Lu      
72 Hafnium Hf      
73 Tantal Ta      
74 Wolfram W      
75 Rhenium Re      
76 Osmium Os      
77 Iridium Ir-192 191,96258 73,8 d γ, β-
78 Platina Pt      
79 Gull Au      
80 Kvikksølv Hg      
81 Thallium Tl-206
Ti-207
Ti-210		 205,97608
206,97740
209,99006		 4,20 min
4,8 min
1,31 min		 β-
γ, β-
γ, β-
82 Bly Pb-206
Pb-207
Pb-208
Pb-210
Pb-211
Pb-214		 205,97444
206,97587
207,97663
209,98416
210,98874
213,99980


22,6 a
36,1 min
26,9 min


γ, β-
γ, β-
γ, β-
83 Vismut Bi-210
Bi-211
Bi-214		 209,98410
210,98726
213,99869		 5,01 d
2,14 min
19,7 min		 β-
α, γ, β-
γ, β-
84 Polonium Po-210
Po-210
Po-210
Po-210
Po-210		 209,98285
210,98663
213,99518
214,99942
218,00897		 138,4 d  
85 Astat At      
86 Radon Rn-219
Rn-222		 219,00948
222,01757		    
87 Francium Fr      
88 Radium Ra-223
Ra-226
Ra-228		 223,01850
226,02540
228,03106		    
89 Actinium Ac-227 227,02775    
90 Thorium Th-227
Th-228
Th-230
Th-231
Th-234		 227,02770
228,02872
230,03313
231,03630
234,04359		    
91 Protactinium Pa-231
Pa-234		 231,03588
234,04330		    
92 Uran U-232
U-234
U-235
U-236
U-238		 232,03713
234,04095
235,04392
236,04556
238,05079		    
93 Neptunium Np-239 239,05293    
94 Plutonium Pu-240 240,05381    
95 Americum Am-241 241,05682    
96 Curium Cm      
97 Berkelium Bk      
98 Californium Cf-247 247,0710    
99 Einsteinium Es      
100 Fermium Fm-251 251,0816    
101 Mendelevium Md      
102 Nobelium No      
103 Lawrencium Lr      
104 Rutherfordium Rf      
105 Dubnium Db      
106 Seaborgium Sg      
107 Bohrium Bh      
108 Hassium Hs      
109 Meitnerium Mt      
110 Ununnilium Uun