Isotope – filtering
Mercury
Hg
80
200.59
Tellurium
Te
52
127.6
Bismuth
Bi
83
208.980
Lead
Pb
82
207.2
Gold
Au
79
196.967
Potassium
K
19
39.0983
Sodium
Na
11
22.99
Cadmium
Cd
48
112.411
Calcium
Ca
20
40.078
Rhenium
Re
75
186.207
Thallium
Tl
81
204.383
Antimony
Sb
51
121.76
Cobalt
Co
27
58.933
Ytterbium
Yb
70
173.054
Argon
Ar
18
39.948
Nitrogen
N
7
14.007
Uranium
U
92
238.029
Plutonium
Pu
94
(244)