Periodic Table/Sodium/²⁸Na

← 27Na29Na →

²⁸Na

Sodium-28

Radioactive· Half-life: 33.1 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

11

Neutrons (N)

17

Mass Number (A)

28

Atomic Mass

27.998939AMU

Spin / Parity

1+

Binding E/A

7.598keV

Natural Abundance

Trace / None

Half-life

33.1 ms

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

β⁻

100.0%

β⁻n

0.6%

Decay Chain

²⁸NaSodium33.1 ms

β⁻100.0%

β⁻n²⁷Mg0.58%

²⁸MgMagnesium20.9 h

β⁻100.0%

²⁸AlAluminum2.25 min

β⁻100.0%

²⁸SiSiliconSTABLE

4-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