Session Expiring!
Your Secure Session,
is about to expire in
seconds.
In order to receive a free sample, first you must be logged into your Tedpella.com account.
Sorry, you have already included your one time free sample in this order. If you would like to include this sample instead, first you will need to remove the previously picked sample.
Sorry you have already received your one time free sample. Please continue with your online order.
in
All Categories
Products
MSDS Sheets
Technical Notes
Products
New Products
Special Sale
Product Videos
Supplies Quick Finder
Instrument Quick Finder
Indices
Abbreviated Contents
Technical Notes
SDS, Safety Data Sheets
Ordering
Place an Order
Request Quote
My Profile
Create Profile
Order Terms
Sign In
International
Distributors
Order Terms
Information Plaza
About Us
Exhibit Schedule
Workshops
Privacy Policy
Our Company
News
Careers
Contact Us
Questions/Comments
Contact Us
Tables and Conversion Charts
Isotopic Abundance & Mass (Accurate)
Isotope
Mass (amu)
Composition
(atomic %)
H
1
1.007825
99.985
H
2
2.0140
0.015
He
3
3.01603
0.00014
He
4
4.00260
99.99986
Li
6
6.015121
7.5
Li
7
7.016003
92.5
Be
9
9.012182
100
B
10
10.012937
19.8
B
11
11.009305
80.2
C
12
12.000000
98.90
C
13
13.003355
1.10
N
14
14.003074
99.63
N
15
15.000108
0.37
O
16
15.994915
99.762
O
17
16.999131
0.038
O
18
17.999160
0.200
F
19
18.998403
100
Ne
20
19.992435
90.51
Ne
21
20.993843
0.27
Ne
22
21.991383
9.22
Na
23
22.989767
100
Mg
24
23.985042
78.99
Mg
25
24.985837
10.00
Mg
26
25.982593
11.01
Al
27
26.98154
100
Si
28
27.976927
92.23
Si
29
28.976495
4.67
Si
30
29.973770
3.10
P
31
30.973762
100
S
32
31.972070
95.02
S
33
32.971456
0.75
S
34
33.967866
4.21
S
36
35.967080
0.02
Cl
35
34.968852
75.77
Cl
37
36.965903
24.23
Ar
36
35.967545
0.337
Ar
38
37.962732
0.063
Ar
40
39.962384
99.60
K
39
38.963707
93.2581
K
40
39.963999
0.0117
K
41
40.961825
6.7302
Ca
40
39.962591
96.941
Ca
42
41.958618
0.647
Ca
43
42.958766
0.135
Ca
44
43.955480
2.086
Ca
46
45.953689
0.004
Ca
48
47.952533
0.187
Sc
45
44.955910
100
Ti
46
45.952629
8.0
Ti
47
46.951764
7.3
Ti
48
47.947947
73.8
Ti
49
48.947871
5.5
Ti
50
49.944792
5.4
V
50
49.947161
0.25
V
51
50.943962
99.75
Cr
50
49.946046
4.35
Cr
52
51.940509
83.79
Cr
53
52.940651
9.50
Cr
54
53.938882
2.36
Mn
55
54.938047
100
Fe
54
53.939612
5.8
Fe
56
55.934939
91.72
Fe
57
56.935396
2.2
Fe
58
57.933277
0.28
Co
59
58.933198
100
Ni
58
57.935346
68.27
Ni
60
59.930788
26.10
Ni
61
60.931058
1.13
Ni
62
61.928346
3.59
Ni
64
63.927968
0.91
Cu
63
62.939598
69.17
Cu
65
64.927793
30.83
Zn
64
63.929145
48.6
Zn
66
65.926034
27.9
Zn
67
66.927129
4.1
Zn
68
67.924846
18.8
Zn
70
69.925325
0.6
Ga
69
68.925580
60.1
Ga
71
70.924700
39.9
Ge
70
69.924250
20.5
Ge
72
71.922079
27.4
Ge
73
72.923463
7.8
Ge
74
73.921177
36.5
Ge
76
75.921401
7.8
As
75
74.921594
100
Se
74
73.922475
0.9
Se
76
75.919212
9.0
Se
77
76.919912
7.6
Se
78
77.917304
23.5
Se
80
79.916520
49.6
Se
82
81.916698
9.4
Br
79
78.918336
50.69
Br
81
80.916289
49.31
Kr
78
77.920397
0.35
Kr
80
79.916380
2.25
Kr
82
81.913482
11.6
Kr
83
82.914135
11.5
Kr
84
83.911507
57.0
Kr
86
85.910616
17.3
Rb
85
84.911794
72.17
Rb
87
86.909187
27.83
Sr
84
83.913430
0.56
Sr
86
85.909267
9.86
Sr
87
86.908884
7.00
Sr
88
87.905619
82.58
Y
89
88.905849
100
Zr
90
89.904703
51.45
Zr
91
90.905644
11.27
Zr
92
91.905039
17.17
Zr
94
93.906314
17.33
Zr
96
95.908275
2.78
Nb
93
92.906377
100
Mo
92
91.906088
14.84
Mo
94
93.905085
9.25
Mo
95
94.905840
15.92
Mo
96
95.904678
16.68
Mo
97
96.906020
9.55
Mo
98
97.905406
24.13
Mo
100
99.907477
9.63
Tc
-
-
Ru
96
95.907599
5.52
Ru
98
97.905287
1.88
Ru
99
98.905939
12.7
Ru
100
99.904219
12.6
Ru
101
100.905582
17.0
Ru
102
101.904348
31.6
Ru
104
103.905424
18.7
Rh
103
102.905500
100
Pd
102
101.905634
1.02
Pd
104
103.904029
11.14
Pd
105
104.905079
22.33
Pd
106
105.903478
27.33
Pd
108
107.903895
26.46
Pd
110
109.905167
11.72
Ag
107
106.905092
51.84
Ag
109
108.904757
48.16
Cd
106
105.906461
1.25
Cd
108
107.904176
0.89
Cd
110
109.903005
12.49
Cd
111
110.904182
12.80
Cd
112
111.902758
24.13
Cd
113
112.904400
12.22
Cd
114
113.903357
28.73
Cd
116
115.904754
7.49
In
113
112.904061
4.3
In
115
114.903880
95.7
Sn
112
111.904826
1.0
Sn
114
113.902784
0.7
Sn
115
114.903348
0.4
Sn
116
115.901747
14.7
Sn
117
116.902956
7.7
Sn
118
117.901609
24.3
Sn
119
118.903310
8.6
Sn
120
119.902200
32.4
Sn
122
121.903440
4.6
Sn
124
123.905274
5.66
Sb
121
120.903821
57.3
Sb
123
122.904216
42.7
Te
120
119.904048
0.096
Te
122
121.903054
2.60
Te
123
122.904271
0.908
Te
124
123.902823
4.816
Te
125
124.904433
7.14
Te
126
125.903314
18.95
Te
128
127.904463
31.69
Te
130
129.906229
33.80
I
127
126.904473
100
Xe
124
123.905894
0.10
Xe
126
125.904281
0.09
Xe
128
127.903531
1.91
Xe
129
128.904780
26.4
Xe
130
129.903509
4.1
Xe
131
130.905072
21.2
Xe
132
131.904144
26.9
Xe
134
133.905395
10.4
Xe
136
135.907214
8.9
Cs
133
132.905429
100
Ba
130
129.906282
0.106
Ba
132
131.905042
0.101
Ba
134
133.904486
2.417
Ba
135
134.905665
6.592
Ba
136
135.904553
7.854
Ba
137
136.905812
11.23
Ba
138
137.905232
71.70
La
138
137.907105
0.09
La
139
138.906346
99.91
Ce
136
135.907140
0.19
Ce
138
137.905985
0.25
Ce
140
139.905433
88.48
Ce
142
141.909241
11.08
Pr
141
140.907647
100
Nd
142
141.907719
27.13
Nd
143
142.909810
12.18
Nd
144
143.910083
23.80
Nd
145
144.912570
8.30
Nd
146
145.913113
17.19
Nd
148
147.916889
5.76
Nd
150
149.920887
5.64
Pm
-
-
Sm
144
143.911998
3.1
Sm
147
146.914895
15.0
Sm
148
147.914820
11.3
Sm
149
148.917181
13.8
Sm
150
149.917273
7.4
Sm
152
151.919729
26.7
Sm
154
153.922206
22.7
Eu
151
150.919847
47.8
Eu
153
152.921225
52.2
Gd
152
151.919786
0.20
Gd
154
153.920861
2.18
Gd
155
154.922618
14.80
Gd
156
155.922118
20.47
Gd
157
156.923956
15.65
Gd
158
157.924099
24.84
Gd
160
159.927049
21.86
Tb
159
158.925342
100
Dy
156
155.925277
0.06
Dy
158
157.924403
0.10
Dy
160
159.925193
2.34
Dy
161
160.926930
18.9
Dy
162
161.926795
25.5
Dy
163
162.928728
24.9
Dy
164
163.929171
28.2
Ho
165
164.930319
100
Er
162
161.928775
0.14
Er
164
163.929198
1.61
Er
166
165.930290
33.6
Er
167
166.932046
22.95
Er
168
167.932368
26.8
Er
170
169.935461
14.9
Tm
169
168.934212
100
Yb
168
167.933894
0.13
Yb
170
169.934759
3.05
Yb
171
170.936323
14.3
Yb
172
171.936378
21.9
Yb
173
172.938208
16.12
Yb
174
173.938859
31.8
Yb
176
175.942564
12.7
Lu
175
174.940770
97.41
Lu
176
175.942679
2.59
Hf
174
173.940044
0.16
Hf
176
175.941406
5.2
Hf
177
176.943217
18.6
Hf
178
177.943696
27.1
Hf
179
178.945812
13.74
Hf
180
179.946545
35.2
Ta
180
179.947462
0.012
Ta
181
180.947992
99.988
W
180
179.946701
0.13
W
182
181.948202
26.3
W
183
182.950220
14.3
W
184
183.950928
30.67
W
186
185.954357
28.6
Re
185
184.952951
37.40
Re
187
186.955744
62.6
Os
184
183.952488
0.02
Os
186
185.953830
1.58
Os
187
186.955741
1.6
Os
188
187.955860
13.3
Os
189
188.958137
16.1
Os
190
189.958436
26.4
Os
192
191.961467
41.0
Ir
191
190.960584
37.3
Ir
193
192.962917
62.7
Pt
190
189.959917
0.01
Pt
192
191.961019
0.79
Pt
194
193.962655
32.9
Pt
195
194.964766
33.8
Pt
196
195.964926
25.3
Pt
198
197.967869
7.2
Au
197
196.966543
100
Hg
196
195.965807
0.15
Hg
198
197.966743
10.1
Hg
199
198.968254
17
Hg
200
199.968300
23.1
Hg
201
200.970277
13.2
Hg
202
201.970617
29.65
Hg
204
203.973467
6.8
Tl
203
202.972320
29.524
Tl
205
204.974401
70.476
Pb
204
203.973020
1.4
Pb
206
205.974440
24.1
Pb
207
206.975872
22.1
Pb
208
207.976627
52.4
Bi
209
208.980374
100
Po
-
-
At
-
-
Rn
-
-
Fr
-
-
Ra
-
-
Ac
-
-
Th
232
232.038054
100
Pa
-
-
U
234
234.040946
0.0055
U
235
235.043924
0.720
U
238
238.050784
99.2745
USA / Canada
: Telephone: 530-243-2200; 800-237-3526; Fax 530-243-3761; Email:
[email protected]
International
: Telephone: 530-243-2200; Fax 530-243-3761; Email:
[email protected]
Copyright © Ted Pella, Inc., 1996-2022. All rights reserved. All
trademarks
are the property of their respective owners.