1
H
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 1
D
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Chemical Elements

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Chemical Calculators | Atomic Collider Simulation
 2
He
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 3
Li
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 4
Be
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 5
B
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 6
C
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 7
N
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 8
O
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 9
F
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 10
Ne
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 11
Na
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 12
Mg
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 13
Al
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 14
Si
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 15
P
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 16
S
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 17
Cl
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 18
Ar
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 19
K
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 20
Ca
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 21
Sc
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 22
Ti
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 23
V
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 24
Cr
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 25
Mn
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 26
Fe
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 27
Co
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 28
Ni
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 29
Cu
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 30
Zn
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 31
Ga
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 32
Ge
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 33
As
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 34
Se
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 35
Br
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 36
Kr
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 37
Rb
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 38
Sr
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 39
Y
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 40
Zr
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 41
Nb
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 42
Mo
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 43
Tc
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 44
Ru
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 45
Rh
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 46
Pd
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 47
Ag
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 48
Cd
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 49
In
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 50
Sn
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 51
Sb
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 52
Te
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 53
I
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 54
Xe
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 55
Cs
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 56
Ba
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 57-71
La-Lu

 72
Hf
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 73
Ta
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 74
W
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 75
Re
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 76
Os
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 77
Ir
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 78
Pt
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 79
Au
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 80
Hg
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 81
Tl
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 82
Pb
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 83
Bi
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 84
Po
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 85
At
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 86
Rn
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 87
Fr
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 88
Ra
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 89-103
Ac-Lr

 104
Rf

 105
Db

 106
Sg

 107
Bh

 108
Hs

 109
Mt

 110
Ds

 111
Rg

 112
Cn

 113
Uut

 114
Fl

 115
Uup

 116
Lv

 117
Uus

 118
Uuo

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 57
La
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 58
Ce
...
 59
Pr
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 60
Nd
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 61
Pm
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 62
Sm
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 63
Eu
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 64
Gd
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 65
Tb
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 66
Dy
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 67
Ho
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 68
Er
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 69
Tm
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 70
Yb
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 71
Lu
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Islands of Stability
 89
Ac
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 90
Th
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 91
Pa
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 92
U
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 93
Np
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 94
Pu
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 95
Am
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 96
Cm
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 97
Bk
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 98
Cf
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 99
Es
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 100
Fm
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 101
Md
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 102
No
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 103
Lr

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Images and Properties of the Actinoids


All actinoids.
Click an image for the accordant element page.
Actinium
Actinium
Images with blue frame are photomontages,
images with red frames are from external sources.
89 Ac
Thorium
Thorium
Protactinium
Protactinium
Uranium
Uranium
Neptunium
Neptunium
Plutonium
Plutonium
Americium
Americium
Curium
Curium
90 Th91 Pa92 U93 Np94 Pu95 Am96 Cm
Berkelium
Berkelium
Californium
Californium
Einsteinium
Einsteinium
Fermium
Fermium
Mendelevium
Mendelevium
Nobelium
Nobelium
Lawrencium
Lawrencium
97 Bk98 Cf99 Es100 Fm101 Md102 No103 Lr

The actinoids form an own series within the periodic table, like the lanthanoids and chemically similar to them, but here the 5f orbital is filled. All actinoids are radioactive metals and emit very hard γ-radiation. Their stability reaches a peak at thorium and uranium, towards the end of the series it decreases rapidly. Up to uranium, they can be found naturally on Earth. Neptunium and plutonium only occur in nature in tiny traces, these and all elements beyond them have to be made artificially. Chemically, the actinoids are more ignoble and toxic than the lanthanoids. Their usage mostly is restricted to peaceful and military use of nuclear energy and in small amounts for nuclear medicine. The handling of these elements is very difficult and dangerous and can only be done in big, well-protected facilities. Only thorium 232 and uranium 238 have a calculable risk potential for macroscopic amounts outside of high-security labs.


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The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking (outside of the internet credit with url) to the according element page.



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