Periodic Table/Hydrogen/⁴H

← 3H5H →

⁴H

Hydrogen-4

Radioactive

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

1

Neutrons (N)

3

Mass Number (A)

4

Atomic Mass

4.026432AMU

Spin / Parity

2-

Binding E/A

1.593keV

Natural Abundance

Trace / None

Half-life

Unknown

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

n

100.0%

Decay Chain

n100.0%

³HHydrogen12.3 y

β⁻100.0%

³HeHeliumSTABLE

3-step decay chain → stable · Primary path shown

Other Isotopes of Hydrogen

← Back to HydrogenData: IAEA NDS · ENSDF