Magnesium Isotopic Data

 

 

 

Isotope

 

Isotopic Mass

amu

 

% Abundance

 

T1/2

 

T1/2

Units

 

Mass Excess

KeV

 

Binding Energy

Per Nucleon

KeV

 

Decay

Mode

 

Branching

Ratio

19Mg

19.03547 (27)

 

 

 

33,040 (250)

5,840 (13)

2p ?

 

20Mg

20.018863 (29)

 

90

ms

17,570 (27)

6,723 (1.4)

B+

100

21Mg

21.011713 (18)

 

122

ms

10,911 (16)

7,104.7 (7.8)

B+

100

22Mg

21.9995738 (14)

 

3.857

s

-397.0 (1.3)

7,662.63 (6.1)

B+

100

23Mg

22.9941237 (14)

 

11.317

s

-5,473.8 (1.3)

7,901.13 (5.6)

B+

100

24Mg

23.985041699 (13)

78.99 (4)

stable

 

-13,933.567 (13)

8,260.709 (1)

 

 

25Mg

24.985836917 (34)

10.00 (1)

stable

 

-13,192.826 (32)

8,223.504 (1)

 

 

26Mg

25.982592929 (29)

11.01 (3)

stable

 

-16,214.582 (27)

8,333.872 (1)

 

 

27Mg

26.984340585 (52)

 

9.458

m

-14,586.651 (49)

8,263.854 (2)

B-

100

28Mg

27.9838768 (22)

 

20.915

h

-15,018.6 (2)

8,272.41 (7.2)

B-

100

29Mg

28.988600 (15)

 

1.3

s

-10,619 (14)

8,113.8 (4.8)

B-

100

30Mg

29.9904340 (90)

 

335

ms

-8,910.7 (8.4)

8,055.4 (2.8)

B-

100

31Mg

30.996546 (13)

 

230

ms

-3,217 (12)

7,872.3 (3.9)

B-

100

32Mg

31.998975 (19)

 

95

ms

-955 (18)

7,807.8 (5.5)

B-

100

33Mg

33.005254 (21)

 

90.5

ms

4,894 (20)

7,638.5 (5.9)

B-

100

34Mg

34.00946 (25)

 

20

ms

8,810 (230)

7,536 (6.8)

B-

100

35Mg

35.01734 (43)

 

70

ms

16,150 (400)

7,340 (11)

B-

100

36Mg

36.02300 (54)

 

5

ms

21,420 (500)

7,220 (14)

B- ?

 

37Mg

37.03140 (97)

 

40

ms

29,250 (900)

7,030 (24)

B- ?

 

38Mg

38.03757 (54)

 

1

ms

35,000 (500)

6,900 (13)

B- ?

 

39Mg

39.04677 (55)

 

<260

ns

43,570 (510)

6,710 (13)

n ?

 

40Mg

40.05393 (97)

 

1

ms

50,240 (900)

6,580 (23)

B- ?

 

 

Data Source: ENSDF March 2005

©Radiochemistry Society 2005