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 1
H
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 1
D
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Chemical Elements

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He
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Li
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Be
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B
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C
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N
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O
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F
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Ne
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Na
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Mg
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Al
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Si
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P
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S
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Cl
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Ar
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K
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Ca
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Sc
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Ti
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V
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Mn
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Fe
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Co
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Ni
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Cu
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Zn
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Ga
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Ge
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As
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Se
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Br
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Kr
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Rb
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Sr
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Y
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Zr
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Nb
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Mo
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Tc
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Ru
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Rh
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Pd
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Ag
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Cd
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In
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Sn
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Sb
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Te
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I
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 54
Xe
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 55
Cs
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Ba
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 57-71
La-Lu

 72
Hf
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Ta
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 74
W
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Re
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 76
Os
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Ir
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Pt
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Au
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Hg
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Tl
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Pb
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Bi
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Po
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At
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Rn
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Fr
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Ra
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 89-103
Ac-Lr

 104
Rf

 105
Db

 106
Sg

 107
Bh

 108
Hs

 109
Mt

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Ds

 111
Rg

 112
Cn

 113
Nh

 114
Fl

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Mc

 116
Lv

 117
Ts

 118
Og

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La
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Nd
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Pm
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Sm
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Eu
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Gd
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Tb
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Dy
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Ho
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Er
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Tm
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Yb
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Lu
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Islands of Stability
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Ac
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 90
Th
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Pa
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U
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Np
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Pu
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Am
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Cm
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Bk
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Cf
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Es
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Fm
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Md
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 102
No
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 103
Lr

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    106    

106 Sg Seaborgium

Transition metal, no stable and no natural isotopes.

Seaborgium

First made probably 1974 by bombarding lead with chromium, it often decays to rutherfordium. Seaborgium isotopes have half-lifes of maximal some minutes.


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