Periodic Table/Silicon/⁴²Si

← 41Si43Si →

⁴²Si

Silicon-42

Radioactive· Half-life: 12.5 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

14

Neutrons (N)

28

Mass Number (A)

42

Atomic Mass

42.018078AMU

Spin / Parity

0+

Binding E/A

7.239keV

Natural Abundance

Trace / None

Half-life

12.5 ms

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

β⁻

100.0%

β⁻n

2n

Decay Chain

⁴²SiSilicon12.5 ms

β⁻100.0%

β⁻n⁴¹P

2n⁴⁰Si

⁴²PPhosphorus48.5 ms

β⁻100.0%

β⁻n⁴¹S50.0%

2n⁴⁰P

⁴²SSulfur1.02 s

β⁻100.0%

β⁻n⁴¹Cl1.00%

⁴²ClChlorine6.80 s

β⁻100.0%

β⁻n⁴¹Ar

⁴²ArArgon32.9 y

β⁻100.0%

⁴²KPotassium12.4 h

β⁻100.0%

⁴²CaCalciumSTABLE

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

Other Isotopes of Silicon

22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

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