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Chromium
Lattice Constants of Argon
Hg (Symbol of Mercury)
111 (Atomic Number of Roentgenium)
Ionization Energies of Astatine in J/mol

Cr

Chromium

29 known isotopes (3 stable, 26 radioactive)

Show stable only

⁴²Cr

Mass

42.007579 u

Abundance

—

Half-life

13.3 milliseconds

Spin/Parity

0+

Decay Mode(s)

EC/β⁺ (100%), ECP (94.4%)

⁴³Cr

Mass

42.997885 u

Abundance

—

Half-life

21.2 milliseconds

Spin/Parity

(3/2+)

Decay Mode(s)

EC/β⁺ (100%), ECP (79.3%), EC2P (11.6%)

⁴⁴Cr

Mass

43.985591 u

Abundance

—

Half-life

42.8 milliseconds

Spin/Parity

0+

Decay Mode(s)

EC/β⁺ (100%), ECP (7%)

⁴⁵Cr

Mass

44.979050 u

Abundance

—

Half-life

60.9 milliseconds

Spin/Parity

(7/2-)

Decay Mode(s)

β⁺ (100%), β⁺p (34.4%)

⁴⁶Cr

Mass

45.968361 u

Abundance

—

Half-life

0.26 seconds

Spin/Parity

0+

Decay Mode(s)

EC/β⁺ (100%)

⁴⁷Cr

Mass

46.962895 u

Abundance

—

Half-life

500 milliseconds

Spin/Parity

3/2-

Decay Mode(s)

EC/β⁺ (100%)

⁴⁸Cr

Mass

47.954029 u

Abundance

—

Half-life

21.56 h

Spin/Parity

0+

Decay Mode(s)

EC/β⁺ (100%)

⁴⁹Cr

Mass

48.951334 u

Abundance

—

Half-life

42.3 m

Spin/Parity

5/2-

Decay Mode(s)

EC/β⁺ (100%)

⁵⁰Cr

Mass

49.946042 u

Abundance

4.3450%

Half-life

1.3E+18 years

Spin/Parity

0+

Decay Mode(s)

Unknown

⁵¹Cr

Mass

50.944765 u

Abundance

—

Half-life

27.704 d

Spin/Parity

7/2-

Decay Mode(s)

Electron capture (100%)

⁵²Cr Stable

Mass

51.940505 u

Abundance

83.7890%

Half-life

Stable

Spin/Parity

0+

Decay Mode(s)

—

⁵³Cr Stable

Mass

52.940646 u

Abundance

9.5010%

Half-life

Stable

Spin/Parity

3/2-

Decay Mode(s)

—

⁵⁴Cr Stable

Mass

53.938877 u

Abundance

2.3650%

Half-life

Stable

Spin/Parity

0+

Decay Mode(s)

—

⁵⁵Cr

Mass

54.940837 u

Abundance

—

Half-life

3.497 m

Spin/Parity

3/2-

Decay Mode(s)

β⁻ (100%)

⁵⁶Cr

Mass

55.940649 u

Abundance

—

Half-life

5.94 m

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%)

⁵⁷Cr

Mass

56.943612 u

Abundance

—

Half-life

21.1 seconds

Spin/Parity

(3/2)-

Decay Mode(s)

β⁻ (100%)

⁵⁸Cr

Mass

57.944185 u

Abundance

—

Half-life

7.0 seconds

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%)

⁵⁹Cr

Mass

58.948345 u

Abundance

—

Half-life

0.74 seconds

Spin/Parity

(1/2-)

Decay Mode(s)

β⁻ (100%)

⁶⁰Cr

Mass

59.949642 u

Abundance

—

Half-life

0.49 seconds

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%)

⁶¹Cr

Mass

60.954378 u

Abundance

—

Half-life

234 milliseconds

Spin/Parity

(5/2-)

Decay Mode(s)

β⁻ (100%)

⁶²Cr

Mass

61.956143 u

Abundance

—

Half-life

206 milliseconds

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%)

⁶³Cr

Mass

62.961161 u

Abundance

—

Half-life

129 milliseconds

Spin/Parity

1/2-

Decay Mode(s)

β⁻ (100%)

⁶⁴Cr

Mass

63.963886 u

Abundance

—

Half-life

42.9 milliseconds

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%)

⁶⁵Cr

Mass

64.969608 u

Abundance

—

Half-life

27 milliseconds

Spin/Parity

(1/2-)

Decay Mode(s)

β⁻ (100%)

⁶⁶Cr

Mass

65.973011 u

Abundance

—

Half-life

24 milliseconds

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%)

⁶⁷Cr

Mass

66.979313 u

Abundance

—

Half-life

Unknown

Spin/Parity

—

Decay Mode(s)

Unknown

⁶⁸Cr

Mass

67.983156 u

Abundance

—

Half-life

360 nanoseconds

Spin/Parity

0+

Decay Mode(s)

β⁻ (100%), β⁻n (0%)

⁶⁹Cr

Mass

68.989662 u

Abundance

—

Half-life

620 nanoseconds

Spin/Parity

—

Decay Mode(s)

Unknown

⁷⁰Cr

Mass

69.993945 u

Abundance

—

Half-life

620 nanoseconds

Spin/Parity

0+

Decay Mode(s)

Unknown

Decay mode abbreviations:

β⁻ = Beta minus decay, β⁺ = Beta plus decay, EC = Electron capture, α = Alpha decay

n = Neutron emission, p = Proton emission, SF = Spontaneous fission, IT = Isomeric transition

Conversions Print

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Sy

Name

Atomic Mass

Series

Metals

Nonmetals