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Tantalum
Electron Configuration of Selenium
Pm (Symbol of Promethium)
45 (Atomic Number of Rhodium)
Atomic Mass of Rutherfordium in g

Mn

Manganese

29 known isotopes (1 stable, 28 radioactive)

Show stable only

⁴⁴Mn

Mass

44.008009 u

Abundance

—

Half-life

105 nanoseconds

Spin/Parity

—

Decay Mode(s)

Unknown

⁴⁵Mn

Mass

44.994654 u

Abundance

—

Half-life

Unknown

Spin/Parity

—

Decay Mode(s)

Unknown

⁴⁶Mn

Mass

45.986669 u

Abundance

—

Half-life

36.2 milliseconds

Spin/Parity

(4+)

Decay Mode(s)

EC/β⁺ (100%), ECP (57%)

⁴⁷Mn

Mass

46.975774 u

Abundance

—

Half-life

100 milliseconds

Spin/Parity

(5/2-)

Decay Mode(s)

EC/β⁺ (100%), ECP (3.4%)

⁴⁸Mn

Mass

47.968549 u

Abundance

—

Half-life

157.7 milliseconds

Spin/Parity

4+

Decay Mode(s)

EC/β⁺ (100%), β⁺p (0.28%), β⁺α (0.0006%)

⁴⁹Mn

Mass

48.959613 u

Abundance

—

Half-life

382 milliseconds

Spin/Parity

5/2-

Decay Mode(s)

EC/β⁺ (100%)

⁵⁰Mn

Mass

49.954238 u

Abundance

—

Half-life

283.19 milliseconds

Spin/Parity

0+

Decay Mode(s)

EC/β⁺ (100%)

⁵¹Mn

Mass

50.948209 u

Abundance

—

Half-life

46.2 m

Spin/Parity

5/2-

Decay Mode(s)

EC/β⁺ (100%)

⁵²Mn

Mass

51.945559 u

Abundance

—

Half-life

5.591 d

Spin/Parity

6+

Decay Mode(s)

EC/β⁺ (100%)

⁵³Mn

Mass

52.941287 u

Abundance

—

Half-life

3.7E+6 years

Spin/Parity

7/2-

Decay Mode(s)

Electron capture (100%)

⁵⁴Mn

Mass

53.940356 u

Abundance

—

Half-life

312.20 d

Spin/Parity

3+

Decay Mode(s)

EC/β⁺ (100%), β⁻ (0.000093%)

⁵⁵Mn Stable

Mass

54.938043 u

Abundance

100.0000%

Half-life

Stable

Spin/Parity

5/2-

Decay Mode(s)

—

⁵⁶Mn

Mass

55.938903 u

Abundance

—

Half-life

2.5789 h

Spin/Parity

3+

Decay Mode(s)

β⁻ (100%)

⁵⁷Mn

Mass

56.938286 u

Abundance

—

Half-life

85.4 seconds

Spin/Parity

5/2-

Decay Mode(s)

β⁻ (100%)

⁵⁸Mn

Mass

57.940067 u

Abundance

—

Half-life

3.0 seconds

Spin/Parity

1+

Decay Mode(s)

β⁻ (100%)

⁵⁹Mn

Mass

58.940391 u

Abundance

—

Half-life

4.59 seconds

Spin/Parity

5/2-

Decay Mode(s)

β⁻ (100%)

⁶⁰Mn

Mass

59.943137 u

Abundance

—

Half-life

0.28 seconds

Spin/Parity

1+

Decay Mode(s)

β⁻ (100%), Isomeric transition (100%)

⁶¹Mn

Mass

60.944453 u

Abundance

—

Half-life

0.709 seconds

Spin/Parity

5/2(-)

Decay Mode(s)

β⁻ (100%), β⁻n (0.2%)

⁶²Mn

Mass

61.947907 u

Abundance

—

Half-life

92 milliseconds

Spin/Parity

(1+)

Decay Mode(s)

β⁻ (100%)

⁶³Mn

Mass

62.949665 u

Abundance

—

Half-life

0.275 seconds

Spin/Parity

5/2-

Decay Mode(s)

β⁻ (100%)

⁶⁴Mn

Mass

63.953849 u

Abundance

—

Half-life

90 milliseconds

Spin/Parity

1(+)

Decay Mode(s)

β⁻ (100%), β⁻n (2.7%)

⁶⁵Mn

Mass

64.956020 u

Abundance

—

Half-life

92 milliseconds

Spin/Parity

(5/2-)

Decay Mode(s)

β⁻ (100%), β⁻n (7.9%)

⁶⁶Mn

Mass

65.960547 u

Abundance

—

Half-life

65 milliseconds

Spin/Parity

—

Decay Mode(s)

β⁻ (100%)

⁶⁷Mn

Mass

66.963950 u

Abundance

—

Half-life

47 milliseconds

Spin/Parity

(5/2-)

Decay Mode(s)

β⁻ (100%)

⁶⁸Mn

Mass

67.968953 u

Abundance

—

Half-life

28 milliseconds

Spin/Parity

>3

Decay Mode(s)

β⁻ (100%), β⁻n (0%)

⁶⁹Mn

Mass

68.972775 u

Abundance

—

Half-life

16 milliseconds

Spin/Parity

(5/2-)

Decay Mode(s)

β⁻ (100%)

⁷⁰Mn

Mass

69.978046 u

Abundance

—

Half-life

19.9 milliseconds

Spin/Parity

—

Decay Mode(s)

β⁻ (100%), β⁻n (50%)

⁷²Mn

Mass

71.988009 u

Abundance

—

Half-life

620 nanoseconds

Spin/Parity

—

Decay Mode(s)

Unknown

⁷³Mn

Mass

72.992807 u

Abundance

—

Half-life

Unknown

Spin/Parity

—

Decay Mode(s)

β⁻ (100%)

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