WWW ChemTools
Ion Formula by Mol. Weight Isotope Pattern Calculator Mass Loss Calculator Periodic e-Table
WWW BioTools
EMBL Peptide Search - protein ID from peptide mass and sequence data FindMod - post-translational modifications by peptide mass GlycanMass - oligosaccharide mass from structure GlycoMod - oligosaccharide structures from mass Javascript Protein Digest - peptide digest masses Javascipt Fragment Ion Generator for peptides Mascot Search - peptide mass and sequence tools Mowse - protein identification from peptide MS data Protein Prospector - mass spectra interpretation tools PROWL - identification of proteins from MS data
atomic weight
i-mass guides : home
classic articles
definitions & terms
history
mass data
movies
Nobel prizes
protocols
resources
techniques
troubleshooting
tutorials
name
symbol
atomic number
atomic weight
actinium
Ac
89
[227]
aluminium
Al
13
26.981538 (2)
americium
Am
95
[243]
antimony
Sb
51
121.76 (1)
argon
Ar
18
39.948 (1)
arsenic
As
33
74.9216 (2)
astatine
At
85
[210]
barium
Ba
56
137.327 (7)
berkelium
Bk
97
[247]
beryllium
Be
4
9.012182 (3)
bismuth
Bi
83
208.98038 (2)
bohrium
Bh
107
[264]
boron
B
5
10.811 (7)
bromine
Br
35
79.904 (1)
cadmium
Cd
48
112.411 (8)
caesium
Cs
55
132.90545 (2)
calcium
Ca
20
40.078 (4)
californium
Cf
98
[251]
carbon
C
6
12.0107 (8)
cerium
Ce
58
140.116 (1)
chlorine
Cl
17
35.4527 (9)
chromium
Cr
24
51.9961 (6)
cobalt
Co
27
58.9332 (9)
copper
Cu
29
63.546 (3)
curium
Cm
96
[247]
dubnium
Db
105
[262]
dysprosium
Dy
66
162.5 (3)
einsteinium
Es
99
[252]
erbium
Er
68
167.26 (3)
europium
Eu
63
151.964 (1)
fermium
Fm
100
[257]
fluorine
F
9
18.9984032 (5)
francium
Fr
87
[223]
gadolinium
Gd
64
157.25 (3)
gallium
Ga
31
69.723 (1)
germanium
Ge
32
72.61 (2)
gold
Au
79
196.96655 (2)
hafnium
Hf
72
178.49 (2)
hassium
Hs
108
[269]
helium
He
2
4.002602 (2)
holmium
Ho
67
164.93032 (2)
hydrogen
H
1
1.00794 (7)
indium
In
49
114.818 (3)
iodine
I
53
126.90447 (3)
iridium
Ir
77
192.217 (3)
iron
Fe
26
55.845 (2)
krypton
Kr
36
83.8 (1)
lanthanum
La
57
138.9055 (2)
lawrencium
Lr
103
[262]
lead
Pb
82
207.2 (1)
lithium
Li
3
[6.941 (2)]
lutetium
Lu
71
174.967 (1)
magnesium
Mg
12
24.305 (6)
manganese
Mn
25
54.938049 (9)
meitnerium
Mt
109
[268]
mendelevium
Md
101
[258]
mercury
Hg
80
200.59 (2)
molybdenum
Mo
42
95.94 (1)
neodymium
Nd
60
144.24 (3)
neon
Ne
10
20.1797 (6)
neptunium
Np
93
[237]
nickel
Ni
28
58.6934 (2)
niobium
Nb
41
92.90638 (2)
nitrogen
N
7
14.00674 (7)
nobelium
No
102
[259]
osmium
Os
76
190.23 (3)
oxygen
O
8
15.9994 (3)
palladium
Pd
46
106.42 (1)
phosphorus
P
15
30.973762 (4)
platinum
Pt
78
195.078 (2)
plutonium
Pu
94
[244]
polonium
Po
84
[210]
potassium
K
19
39.0983 (1)
praseodymium
Pr
59
140.90765 (2)
promethium
Pm
61
[145]
protactinium
Pa
91
231.03588 (2)
radium
Ra
88
[226]
radon
Rn
86
[222]
rhenium
Re
75
186.207 (1)
rhodium
Rh
45
102.9055 (2)
rubidium
Rb
37
85.4678 (3)
ruthenium
Ru
44
101.07 (2)
rutherfordium
Rf
104
[261]
samarium
Sm
62
150.36 (3)
scandium
Sc
21
44.95591 (8)
seaborgium
Sg
106
[266]
selenium
Se
34
78.96 (3)
silicon
Si
14
28.0855 (3)
silver
Ag
47
107.8682 (2)
sodium
Na
11
22.98977 (2)
strontium
Sr
38
87.62 (1)
sulphur
S
16
32.066 (6)
tantalum
Ta
73
180.9479 (1)
technetium
Tc
43
[98]
tellurium
Te
52
127.6 (3)
terbium
Tb
65
158.92534 (2)
thallium
Tl
81
204.3833 (2)
thorium
Th
90
232.0381 (1)
thulium
Tm
69
168.93421 (2)
tin
Sn
50
118.71 (7)
titanium
Ti
22
47.867 (1)
tungsten
W
74
183.84 (1)
ununbium
Uub
112
[277]
ununnilium
Uun
110
[269]
unununium
Uuu
111
[272]
uranium
U
92
238.0289 (1)
vanadium
V
23
50.9415 (1)
xenon
Xe
54
131.29 (2)
ytterbium
Yb
70
173.04 (3)
yttrium
Y
39
88.90585 (2)
zinc
Zn
30
65.39 (2)
zirconium
Zr
40
91.224 (2)
MS Book Suppliers
Academic Press amazon.com American Chemical Society Barnes & Noble Humana Press Royal Society of Chemistry Wiley Interscience
MS Journals
European Mass Spectrom. Intl. J. of Mass Spectrom. J. American Society of MS J. Mass Spectrometry J. MS Society of Japan Mass Spectrometry Reviews Rapid Communications in MS
Literature Search
Beilstein Abstracts ChemWeb Current Contents - ISI PubMed - NCBI PubScience - DOE