Periodic Table/Sodium/³¹Na

← 30Na32Na →

³¹Na

Sodium-31

Radioactive· Half-life: 16.8 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

11

Neutrons (N)

20

Mass Number (A)

31

Atomic Mass

31.013147AMU

Spin / Parity

3/2+

Binding E/A

7.217keV

Natural Abundance

Trace / None

Half-life

16.8 ms

Decay Modesoverview · half-life · α · β⁻ · β⁺

β⁻

100.0%

β⁻n

36.0%

2n

0.7%

3n

0.1%

Decay Chain

³¹NaSodium16.8 ms

β⁻100.0%

β⁻n³⁰Mg36.0%

2n²⁹Na0.73%

3n²⁸Na0.05%

³¹MgMagnesium270 ms

β⁻100.0%

β⁻n³⁰Al6.20%

³¹AlAluminum644 ms

β⁻100.0%

β⁻n³⁰Si1.60%

³¹SiSilicon2.62 h

β⁻100.0%

³¹PPhosphorusSTABLE

5-step decay chain → stable · Primary path shown · branching ratios indicated

Other Isotopes of Sodium

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

← Back to SodiumData: IAEA NDS · ENSDF