¹H

1

1.007825032

99.985(1)

²H; D

2

2.014101778

0.015(1)

³H; T

3

3.016049268

<0.0001

⁴He

4

4.002603250

~100

⁶Li

6

6.0151223

7.5(2)

⁷Li

7

7.0160041

92.5(2)

⁹Be

9

9.0121822

~100

¹⁰B

10

10.0129371

19.9(2)

¹¹B

11

11.0093055

80.1(2)

¹²C

12

12.000000000

98.93(8)

¹³C

13

13.003354838

1.07(8)

¹⁴N

14

14.003074007

99.632(7)

¹⁵N

15

15.00010897

0.368(7)

¹⁶O

16

15.994914622

99.757(16)

¹⁷O

17

16.9991315

0.038(1)

¹⁸O

18

17.999160

0.205(14)

¹⁹F

19

18.9984032

~100

²⁰Ne

20

19.992440176

90.48(3)

²¹Ne

21

20.99384674

0.27(1)

²²Ne

22

21.9913855

9.25(3)

²³Na

23

22.9897697

~100

²⁴Mg

24

23.9850419

78.99(4)

²⁵Mg

25

24.9858370

10.00(1)

²⁶Mg

26

25.9825930

11.01(3)

²⁷Al

27

26.9815384

~100

²⁸Si

28

27.97692653

92.22(2)

²⁹Si

29

28.97649472

4.69(1)

³⁰Si

30

29.97377022

3.09(1)

³¹P

31

30.9737615

~100

³²S

32

31.9720707

94.93(31)

³³S

33

32.9714585

0.76(2)

³⁴S

34

33.9678668

4.29(28)

³⁶S

36

35.9670809

0.02(1)

³⁵Cl

35

34.96885271

75.78(4)

³⁷Cl

37

36.96590260

24.22(4)

³⁶Ar

36

35.9675463

0.3365(30)

³⁸Ar

38

37.9627322

0.0632(5)

⁴⁰Ar

40

39.962383123

99.6003(30)

³⁹K

39

38.9637069

93.2581(44)

⁴⁰K

40

39.9639987

0.0117(1)

⁴¹K

41

40.9618260

6.7302(44)

⁴⁰Ca

40

39.9625912

96.941(156)

⁴²Ca

42

41.9586183

0.647(23)

⁴³Ca

43

42.9587668

0.135(10)

⁴⁴Ca

44

43.955481

2.086(110)

⁴⁶Ca

46

45.953693

0.004(3)

⁴⁸Ca

48

47.952533

0.187(21)

⁴⁵Sc

45

44.955910

~100

⁴⁶Ti