H

Hydrogen-1

Protons (Z)

1

Neutrons (N)

0

Mass number

1

Half-Life

Stable

Abundance

99.9855%

Mass

1.008 u

Mass Excess

7,288.971 keV

Spin

1/2+

Discovered

1920

Binding energy per nucleon

0 keV

Neutron separation energy

---

Proton separation energy

---

Decay Mode

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