Periodic Table/Beryllium/¹²Be

← 11Be13Be →

¹²Be

Beryllium-12

Radioactive· Half-life: 21.5 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

4

Neutrons (N)

8

Mass Number (A)

12

Atomic Mass

12.026922AMU

Spin / Parity

0+

Binding E/A

5.550keV

Natural Abundance

Trace / None

Half-life

21.5 ms

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

β⁻

100.0%

β⁻n

0.5%

Decay Chain

¹²BeBeryllium21.5 ms

β⁻100.0%

β⁻n¹¹B0.50%

¹²BBoron20.2 ms

β⁻100.0%

β⁻α⁸Be0.60%

¹²CCarbonSTABLE

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

Other Isotopes of Beryllium

5 6 7 8 9 10 11 12 13 14 15 16

← Back to BerylliumData: IAEA NDS · ENSDF