based on ¹²C=12.00000000 and abundance

¹H

1.00783 (100.00 %)

²H

2.01410 (0.0160 %) averaged atomic weight 1.00794

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¹²C

12.00000 (100.00 %)

¹³C

13.00336 (1.11 %) averaged atomic weight 12.01115

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¹⁴N

14.0031 (100.00 %)

¹⁵N

15.0001 (0.38 %) averaged atomic weight 14.0067

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¹⁶O

15.9949 (100.00 %)

¹⁷O

16.9991 (0.04 %)

¹⁸O

17.9992 (0.20 %) averaged atomic weight 15.9994

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³²S

31.9721 (100.00 %)

³³S

32.9715 (0.78 %)

³⁴S

33.9679 (4.44 %) averaged atomic weight 32.066

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³⁵Cl

34.9689 (100.00 %)

³⁷Cl

36.9659 (32.5 %) averaged atomic weight 35.4527

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⁷⁹Br

78.9183 (100.00 %)

⁸¹Br

80.9163 (98.0 %) averaged atomic weight 79.9094

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¹²⁷I

126.9045 (100.0000 %) averaged atomic weight 126.9045