Chromium Isotopic Data

 

 

 

Isotope

 

Isotopic Mass

amu

 

% Abundance

 

T1/2

 

T1/2

Units

 

Mass Excess

KeV

 

Binding Energy

Per Nucleon

KeV

 

Decay

Mode

 

Branching

Ratio

42Cr

42.00643 (32)

 

14

ms

5,990 (300)

7,482 (7)

B+~100

 

43Cr

42.99771 (24)

 

21.6

ms

-2,130 (220)

7,684 (5)

B+

100

44Cr

43.985549 (54)

 

54

ms

-13,461 (50)

7,951 (1)

B+

100

45Cr

44.97964 (54)

 

50

ms

-18,970 (500)

8,080 (11)

B+

100

46Cr

45.968359 (21)

 

260

ms

-29,474 (20)

8,303.9 (4.4)

B+

100

47Cr

46.962900 (15)

 

500

ms

-34,558 (14)

8,407.1 (3)

B+

100

48Cr

47.9540317 (79)

 

21.56

h

-42,819.2 (7.4)

8,572.2 (1.5)

B+

100

49Cr

48.9513357 (26)

 

42.3

m

-45,330.5 (2.4)

8,613.24 (4.9)

B+

100

50Cr

49.9460442 (11)

4.345 (13)

stable

 

-50,259.5 (1)

8,700.98 (2)

 

 

51Cr

50.9447674 (11)

 

27.7025

d

-51,448.8 (1)

8,711.95 (2)

EC

100

52Cr

51.94050747 (84)

83.789 (18)

stable

 

-55,416.93 (78)

8,775.94 (1.5)

 

 

53Cr

52.94064939 (83)

9.501 (17)

stable

 

-55,284.74 (77)

8,760.16 (1.5)

 

 

54Cr

53.93888040 (82)

2.365 (7)

stable

 

-56,932.55 (76)

8,777.91 (1.4)

 

 

55Cr

54.94083967 (84)

 

3.497

m

-55,107.49 (79)

8,731.88 (1.4)

B-

100

56Cr

55.9406531 (20)

 

5.94

m

-55,281.2 (1.9)

8,723.19 (3.3)

B-

100

57Cr

56.9436130 (20)

 

21.1

s

-52,524.1 (1.9)

8,663.38 (3.3)

B-

100

58Cr

57.94435 (22)

 

7

s

-51,830 (200)

8,641 (3.5)

B-

100

59Cr

58.94859 (26)

 

460

ms

-47,890 (240)

8,565 (4.1)

B-

100

60Cr

59.95008 (23)

 

560

ms

-46,500 (210)

8,533 (3.6)

B-

100

61Cr

60.95472 (27)

 

261

ms

-42,180 (250)

8,455 (4.2)

B-

100

62Cr

61.95661 (36)

 

199

ms

-40,410 (340)

8,420 (5.4)

B-

100

63Cr

62.96186 (32)

 

129

ms

-35,530 (300)

8,337 (5)

B-

100

64Cr

63.96441 (43)

 

43

ms

-33,150 (400)

8,296 (6)

B-

100

65Cr

64.97016 (54)

 

27

ms

-27,800 (500)

8,210 (8)

B-

100

66Cr

65.97338 (64)

 

10

ms

-24,800 (600)

8,163 (9)

B-

100

67Cr

66.97955 (75)

 

10

ms

-19,050 (700)

8,080 (10)

B- ?

 

45mCr

44.97964 (54)

 

1

ms

-18,970 (500)

8,080 (11)

IT ?

 

59mCr

58.94859 (26)

 

96

us

-47,890 (240)

8,565 (4.1)

IT

100

 

Data Source: ENSDF March 2005

©Radiochemistry Society 2005