Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Period
Key
Biologically relevant elements colored
*
 Major, essential, all life
*
 Major anions, all life
*
 Major cations, all life
*
 Essential, trace, all life
*
 Major biological transition metals
*
 Specialized uses, some life
*
 May be bound, transported, reduced, and/or methylated
Inert or unknown biological function
1
1
H
 2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
 10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
 18
Ar
4
19
K
20
Ca
 21
Sc		 22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
 36
Kr
5
37
Rb
38
Sr
 39
Y		 40
Zr		 41
Nb
42
Mo
43
Tc
 44
Ru
45
Rh
 46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
 54
Xe
6
55
Cs
56
Ba
   71
Lu		 72
Hf		 73
Ta
74
W
 75
Re		 76
Os		 77
Ir		 78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
 85
At		 86
Rn
7
87
Fr
88
Ra
 
Lanthanoids   57
La		 58
Ce		 59
Pr		 60
Nd		 61
Pm		 62
Sm		 63
Eu		 64
Gd		 65
Tb		 66
Dy		 67
Ho		 68
Er		 69
Tm		 70
Yb
Actinoids   89
Ac		 90
Th		 91
Pa
92
U
 93
Np
94
Pu
 95
Am		 96
Cm		 97
Bk		 98
Cf		 99
Es		 100
Fm		 101
Md
102
No

[About the BPT] [Spiral Table] [Links] [Search] [EAWAG-BBD Home Page]

Page Author(s): Steve Toeniskoetter, Jennifer Dommer, Tony Dodge

Contact Us 
© 2024, EAWAG. All rights reserved.

http://eawag-bbd.ethz.ch/periodic/index.html